Map style inspired by the sample poster: dark basemap, vivid footprints.
Real OSM building footprints; if no year is tagged, a synthetic year
is assigned per district:
Altstadt 1850–1950 · Ehrenfeld 1920–1980 · Chorweiler 1970–2000 · Mülheim 1930–2000 · sonst 1950–2020.
2025
0 buildings
Export format: id,year_built,synthetic,district,geometry (WKT for CSV).
Network issues (Overpass) are handled gracefully; you may see fewer or no buildings if blocked.