Český Krumlov's UNESCO-listed old town is mapped building by building in this interactive heritage map. More than thirty building types, from chapels and apartments to barns and civic halls, are classified from OpenStreetMap alongside the street network and geotagged photos of the historic centre. Switch on the amenities layer to find cafés, banks, museums and boat rentals on the Vltava, or reuse the project as a template for small-town tourism guides.