Isle of Man Tynwald Day (186/365)

As a continuous government, the country that celebrated its independence yesterday is fairly old. But not as old as Isle of Man! Not even close.

Tynwald Day is July 5th. Tynwald Day is the Isle of Man’s national day, marking the annual open-air sitting of the Manx Parliament at Tynwald Hill in St. John’s.

It’s a centuries-old tradition rooted in Norse custom, making it the site of the longest unbroken parliament in the world.

Admittedly, I did not know much about it before I saw it on the list this week, but I thought it would be good to spread the love among the different independence days this week. And this one is epic – over 1000 continuous years of parliament and going!

I used the Sanborn Fire Insurance map design schema from the Prompt Cartography website for this map.

I also had GIS Data Doctor write a turbooverpass-eu query to grab all the non-residential building footprints on the island to see how it would style them. You can turn those on in the Layers panel. Admittedly, this map is a little simple. It was more about experimenting a bit with data hunting and scraping while I hide in my garage under a barrage of fireworks going off. 🙂


Happy Tynwald Day, Isle of Man! And enjoy the long weekend when you get Monday off from work, which is the official day-off for the holiday this year, because it falls on Sunday.

Click to view map


Initial WebMapGPT Prompt

Hi. Please take a look at the attached datasets.

Please create a map using the web_mapper_directive.json schema and the attached Sanborn-style design-schema.

The map should be mobile friendly (phones first) but can use different CSS to provide a view with more whitespace on a laptop if it will enhance communication in those contexts. Thank you. Please stop and let me know if you have any questions before you proceed with making the map but after you have read the map plan and looked at the available datasets. Appreciate it!