Anywhere in the world.
Click the square at the top-left of the map to get started.
Location lookup by locationiq.
(This works for the whole world).
Documentation and methods and raw data are on The GitHub repo.
Golfing polygons are extracted from OpenStreetMap and are the copyright of the OSM contributors.
The Map API is hosted on a free-tier server on Azure. I wrote the server myself, the code is awful. If this site gets popular it will go down.