I'm on my way to Amsterdam for . If you like OpenStreetMap, open data, and other cool things, you should try our web version of "Map to Poster": poster.54gradsoftware.de/. With this software, you can create attractive posters and postcards of cities.
It is a TypeScript and web GUI version of github.com/originalankur/mapto.
More Background: hachyderm.io/@sabrinkmann/1160
This is also a great example of how you can create beauty with open data. Here are some examples:

Map of the cnetre of Amsterdam. A lot of blue and a waterway in the middleA Poster of the central Amsterdam. You can see the motorways in pinks, streets in light blue/green and a dark waterwayPoster of Rotterdam. The motorways are in bright yellow and the streets in a darker yellowPoster of Rotterdam and with blue waterways and dark blue  streets
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