Twinvio turns Leipzig and Frankfurt into walkable block worlds

Field notes

The interface lets visitors pick a start location and walk using ground clicks, while dragging changes the view; avatar selection opens a profile. Map tiles can be selected individually, and the displayed controls include several building styles, three block sizes, and first-person or bird’s-eye views. The page credits OpenStreetMap contributors under ODbL and names Mapzen, EU-DEM/Copernicus, and USGS for terrain data. It also includes a public wishes area, though the page reports that the city overview is taking longer than usual to load.