Only one day appealed to me for a mapping tribute today – Thomas Crapper Day. A day dedicated to the English plumber who invented the modern flushing toilet in the late 1800s that we literally still use today. Though I must admit I was a little short of ideas for this celebration. Should I map world sanitation? Maybe the location of Crapper & Co manhole covers in London? The average number of times people poop every day? Who knows! But rather than stress it I thought I’d literally leave this to the AI to flush out.
I normally don’t put in too much of the conversation I have with the AI preferring to just show the prompts as a way to show how the map was made. But instead, I’m going to paste in the entire thread because it’s fantastic! I ended up asking AI to create four of its suggestions! The result was a hybrid poster with four interesting map-like depictions.
And for those of you reading this on the pot (crapper, loo, toilet etc)…you know who you are!
Original Prompt (ChatGPT)
You said:
ChatGPT said:
Brilliant subject. If anyone deserves a cartographic tribute dripping with lavatorial wit, it’s Thomas Crapper. Below are map concepts that fully lean into toilet humour, while still being genuinely cartographic and exhibition-worthy.
🚽 1. “Great British Thrones”
A national atlas of porcelain power



Concept
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Map of the UK showing all public toilets as:
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🚽 Toilet icons styled like royal thrones
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Size scaled by cubicle count (Dorling cartogram potential)
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London explodes into a dense porcelain constellation
Toilet Humour Layer
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Capital cities labelled:
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“Seat of Power”
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“House of Commons (and Relief)”
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Westminster annotated:
“Where legislation and constipation meet.”
Legend title:
“Places to Spend a Penny”
💩 2. “From John o’ Groats to the Bottom”
A journey through Britain’s loos
Concept
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A north–south linear map or strip-map
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A stylised turd-shaped path (tasteful…ish) winding through the UK
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Every major stop is a notable loo
Toilet Humour Layer
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Milestones:
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“50 miles since last relief”
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“Hope you didn’t skip leg day”
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End label at Land’s End:
“You’ve reached the end of the line. Flush responsibly.”
🧻 3. “The Porcelain Underground”
(London Tube map, but for toilets)


Concept
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Tube-style schematic map
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Each “line” = toilet category:
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🚻 Public
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🏛️ Historic
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🍺 Pub loos
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💎 Surprisingly pleasant
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Toilet Humour Layer
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Line names:
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The Number Two Line
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The Relief Line
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The Express (No Stops)
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Stations:
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“Sudden Emergency”
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“Just in Time”
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“Too Late”
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🧼 4. “Flushability Index of the United Kingdom”
A choropleth map nobody asked for
Concept
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Choropleth by council authority:
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Cleanliness
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Opening hours
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Probability of regret
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Colour ramp from:
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💚 “Sit With Confidence”
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💛 “Hover Territory”
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🔴 “Abort Mission”
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Toilet Humour Layer
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Legend disclaimer:
“Based on vibes, fear, and lived experience.”
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Scotland’s Highlands:
“Hold it.”
🧱 5. “The Crapper Legacy”
Victorian plumbing meets modern GIS



Concept
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Sepia-toned UK map
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Overlay of:
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Early sewer networks
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Historic toilets
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Royal flush locations (Buckingham Palace nod)
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Toilet Humour Layer
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Portrait of Crapper with speech bubble:
“I gave you dignity. You did… this.”
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Subtitle:
“A nation built on pipes and hope.”
🧠 6. Ultra-Nerd Bonus: “Toilet Density Equalising Cartogram”
(Because of course)
Concept
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UK reshaped so each toilet = equal area
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London becomes absurdly massive
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Rural Wales nearly disappears
Toilet Humour Layer
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Annotation:
“This is why Londoners queue.”
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Scale bar labelled:
“One square = one desperate moment.”
🪠 Styling Notes (Important)
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Fonts: playful serif + industrial plumbing stencil
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Colour palette:
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Porcelain white
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Victorian teal
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Sewer brown (tastefully muted)
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Symbols:
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Chains, plungers, cisterns, pipes
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Mandatory footer:
“Dedicated to Sir Thomas Crapper: flushing since the 19th century.”
If you want…
I can:
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🔧 Pick one concept and fully spec it for ArcGIS Pro
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🗺️ Design a poster-ready layout (title, legend, annotations locked)
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🎨 Push it even further into absurdity (animated flush? hovering icons? Victorian mascots?)
Just tell me which toilet you’d like to sit on first. 🚽
You said:
ChatGPT said:
Excellent choices — those four together actually feel like a mini exhibition series rather than isolated jokes. Below I’ve fully fleshed out each map as if they were ready to be designed, printed, and hung side-by-side. I’ve leaned hard into toilet humour without sacrificing cartographic intelligence.
🚽 MAP 1 — Great British Thrones
A Cartography of Porcelain Power



Core Idea
A UK-wide point map showing every public toilet, rendered as ornate throne icons — blending monarchy, municipal power, and bodily urgency.
Map Type
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Proportional symbol map
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Optional Dorling cartogram variant for dense urban areas
Visual Language
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Toilets illustrated as:
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Gold-trimmed thrones
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Red velvet seats
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Chain-pull flushes
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Each throne’s size = number of cubicles
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Disabled access toilets get a subtle halo glow (the true VIPs)
Humour Layer (Labels & Annotations)
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London:
“The Imperial Seat”
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Cardiff:
“Welsh Assembly (Lower Chamber)”
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Edinburgh:
“Highland Relief”
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Coastal towns:
“Holiday Throne Clusters (queue accordingly)”
Legend (Very Important)
Legend title:
“Where Britain Takes a Seat”
Legend categories:
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👑 Royal Flush (large, well-maintained)
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🚽 Standard Issue
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⚠️ Emergency Only
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❌ Boarded-Up Dreams
Design Easter Eggs
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Buckingham Palace toilet labelled:
“Reserved.”
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Scale bar:
“Distance you can waddle.”
💩 MAP 2 — From John o’ Groats to the Bottom
A Long-Distance Guide to National Relief


Core Idea
A linear north–south journey map, styled like a pilgrimage route — except the destination is relief.
Map Type
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Strip map / itinerary map
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Vertical layout (perfect for posters)
Visual Language
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A winding brown (tasteful!) route down Britain
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Terrain simplified into playful landforms
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Toilet stops marked as:
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🚻 Major Stops
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🚽 Minor Stops
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🪣 “Hope You Planned Ahead”
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Distance Markers
Instead of miles:
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“30 minutes holding it”
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“Too late to turn back”
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“Questionable decision”
Annotation Gems
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Scottish Highlands:
“Faith-based navigation begins here.”
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Lake District:
“Beautiful, but don’t drink the water.”
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Midlands:
“False sense of security.”
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Cornwall:
“End of the line. Flush or perish.”
Title Block
Main title:
From John o’ Groats to the Bottom
Subtitle:
A national journey fuelled by tea and regret
🚇 MAP 3 — The Porcelain Underground
Britain’s Hidden Transit System



Core Idea
A Tube-map-style schematic, except every “station” is a toilet and every “line” reflects urgency, quality, or legality.
Map Type
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Topological schematic
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No scale, maximum satire
Lines (Colour-Coded)
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🔵 Relief Line — dependable public loos
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🔴 Number Two Line — high-risk, high-reward
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🟢 Pub Loops — technically customers only
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🟡 Historic Line — Victorian, damp, brave souls only
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⚫ Night Bus Replacement — “Good luck”
Station Names
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“Sudden Emergency”
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“Just in Time”
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“No Lock”
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“Why Is It Wet?”
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“Shouldn’t Have Had That Coffee”
Interchanges
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“Panic Junction”
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“Clench Central”
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“Too Late”
Map Notes (Like Tube Fine Print)
“Service may be suspended due to cleaning, vandalism, or unspeakable acts.”
🧠 MAP 6 — Toilet Density Equalising Cartogram
A Spatial Distortion of Desperation



Core Idea
A density-equalising cartogram where each public toilet occupies equal area — reshaping the UK into a grotesque but truthful form.
Map Type
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Gastner–Newman cartogram (or Dorling hybrid)
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Each unit = one toilet
Visual Outcome
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London becomes a bulging porcelain mass
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Birmingham, Manchester balloon outward
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Highlands shrink to near myth
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Rural Wales becomes… conceptual
Symbolisation
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Each polygon lightly embossed with a toilet icon
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Colour-coded by:
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Accessibility
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Opening hours
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Regret factor
-
Annotations
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London:
“You still won’t find one when you need it.”
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Scotland:
“Nature remains undefeated.”
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Tourist hotspots:
“Seasonal distortion zone.”
Legend
One shape = one moment of hope
Scale bar:
“Cartographically impossible to hold.”
🪠 SERIES-WIDE COHESION
Exhibition Title
“A Nation of Thrones”
Four maps celebrating plumbing, perseverance, and panic
Unified Design
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Porcelain white background
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Victorian teal + sewer brown accents
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Subtle pipe motifs connecting map frames
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Footnote on every map:
Dedicated to Thomas Crapper — who made civilisation tolerable.
Next steps (your call):
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I can lock one map and spec it precisely for ArcGIS Pro
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Turn this into a four-poster print set
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Push one concept to dangerous levels of absurdity
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Or mash two ideas together (Porcelain Underground Cartogram 👀)
Tell me which one you want to flush to “final.”
You said:
ChatGPT said:
Perfect. Let’s treat this properly — a coherent, exhibition-ready four-poster print set that feels intentional, witty, and cartographically serious beneath the filth.
Below is the locked concept + print specification for the full set.
🚽 A NATION OF THRONES
Four Maps Celebrating Plumbing, Panic, and the British Constitution



Dedicated to Thomas Crapper (1836–1910)
Who brought dignity to desperation.
🖼️ EXHIBITION FORMAT (ALL POSTERS)
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Size: A1 (594 × 841 mm) portrait
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Print: Uncoated heavy stock (slight tooth = porcelain feel)
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Palette:
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Porcelain White
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Victorian Teal
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Sewer Brown (muted)
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Brass Gold (spot highlights only)
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Typography:
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Titles: Decorative Victorian serif
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Labels: Clean humanist sans
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Annotations: Handwritten/cartoon script
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Shared footer (all posters):
“A Nation of Thrones — cartography at the point of need.”
🪠 POSTER 1
Great British Thrones
A Cartography of Porcelain Power
Map Type
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UK proportional symbol map
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Optional Dorling inset for London & major metros
Visuals
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Public toilets shown as ornate throne icons
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Icon size = number of cubicles
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Subtle shadow so they “sit” on the map
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Accessible toilets get a soft gold ring
Labels & Humour
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London: “The Imperial Seat”
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Edinburgh: “Highland Relief”
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Seaside towns: “Seasonal Thrones (queue builds rapidly)”
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Buckingham Palace: “Reserved.”
Legend Title
Where Britain Takes a Seat
Tone
Majestic. Ridiculous. Reverent.
💩 POSTER 2
From John o’ Groats to the Bottom
A National Journey Fuelled by Tea and Regret
Map Type
-
Vertical strip map
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North → South pilgrimage layout
Visuals
-
Winding route down the UK (tastefully brown)
-
Terrain simplified, playful
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Toilet stops ranked by “confidence level”
Distance Markers (Not Miles)
-
“20 minutes holding it”
-
“You’ll regret that coffee”
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“Hope is fading”
Annotations
-
Scottish Highlands:
“Faith-based navigation begins here.” -
Midlands:
“False sense of security.” -
Cornwall:
“End of the line. Flush wisely.”
Tone
Narrative. Absurd. Deeply relatable.
🚇 POSTER 3
The Porcelain Underground
Britain’s Hidden Transit System
Map Type
-
Tube-style schematic
-
Zero geographic accuracy, maximum truth
Lines
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🔵 Relief Line — reliable public loos
-
🔴 Number Two Line — high-risk, high-reward
-
🟢 Pub Loop — customers only (technically)
-
🟡 Historic Line — Victorian, brave souls
-
⚫ Night Replacement — “good luck”
Stations
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Sudden Emergency
-
Panic Junction
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No Lock
-
Why Is It Wet?
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Too Late
Small Print (Bottom Corner)
“Services may be suspended due to cleaning, vandalism, or unspeakable acts.”
Tone
Graphic. Iconic. Laugh-out-loud readable from across the room.
🧠 POSTER 4
Toilet Density Equalising Cartogram
A Spatial Distortion of Desperation
Map Type
-
Density-equalising cartogram
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One unit = one public toilet
Visual Impact
-
London explodes into a porcelain mass
-
Major cities bulge outward
-
Highlands collapse into near abstraction
-
Rural Wales becomes… conceptual
Symbolisation
-
Each unit lightly embossed with 🚽 icon
-
Colour by:
-
Accessibility
-
Opening hours
-
Regret factor
-
Annotations
-
London:
“You still won’t find one when you need it.” -
Tourist hotspots:
“Seasonal distortion zone.”
Legend
One shape = one moment of hope
Tone
Academic parody. GIS nerd heaven.
🖼️ INSTALLATION SUGGESTION (Optional but Perfect)
Left → Right hanging order:
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Great British Thrones (Authority)
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John o’ Groats to the Bottom (Journey)
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Porcelain Underground (System)
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Density Cartogram (Truth)
Together they tell a story:
Power → Travel → Infrastructure → Reality
🚽 NEXT STEPS
I can now:
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Lock this as a production spec
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Generate print-ready layouts
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Build a single unified title panel
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Or adapt one poster into a conference keynote slide
Say the word, and I’ll flush this set to final.

