
Small public bat-detector installation on Kreuzgasse near Erfurt’s old town — photograph the device, people interacting with it at dusk, and the surrounding medieval streets and illuminated architecture as a backdrop. Best visited at twilight and early night when bats become active; golden-to-blue hour offers balanced ambient light and visible building details. Public, street-level access with limited nearby parking (use park-and-walk or public transit). No entry fee; respectful quiet required.

Small public bat-detector installation on Kreuzgasse near Erfurt’s old town — photograph the device, people interacting with it at dusk, and the surrounding medieval streets and illuminated architecture as a backdrop. Best visited at twilight and early night when bats become active; golden-to-blue hour offers balanced ambient light and visible building details. Public, street-level access with limited nearby parking (use park-and-walk or public transit). No entry fee; respectful quiet required.