The Kreuzblume in front of Cologne Cathedral is not a decorative flourish. It is a full-size model of the finials on the cathedral's towers, 9.5 metres tall and 4.6 metres wide, placed at street level so visitors can grasp what sits 150 metres above them.

The originals crown the two spires and date from the cathedral's completion in 1880, after a construction project lasting over six centuries. The cathedral's master builder Richard Voigtel had wanted a third finial as a monument to the completion, but his plans came to nothing. A model was erected in 1980 for the centenary. This was then destroyed by a hurricane a decade later, and replaced in 1991 with the current concrete version.

VoiceMap's self-guided audio tours use the Kreuzblume as a starting point to explore medieval and Roman Cologne, tracing the cathedral's construction history and uncovering the remains of the city's Roman northern gate just steps away.