Why
Most maps try to show you everything. This one shows you the shape of the ground, and almost nothing else.
Built on open data
Every line on this map comes from people who share their work freely. If it is useful to you, give back to them.
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OpenStreetMap
Water, borders, place names and museums, mapped by volunteers.
Donate to the OpenStreetMap Foundation ↗ -
OpenFreeMap
Hosts those map tiles free of charge, in the OpenMapTiles schema.
Sponsor OpenFreeMap ↗ -
Photon
Search: open source, run by komoot, maintained by Sarah Hoffmann.
Sponsor its maintainer ↗ -
Wikipedia and Wikimedia Commons
The museums' write-ups and photographs.
Donate to Wikimedia ↗ -
Terrain Tiles
Every contour: elevation from USGS (SRTM, 3DEP, GMTED2010) and NOAA (ETOPO1), tiled by Mapzen.
Public data from government surveys, free to all.