Bismarck Tower (Freiburg im Breisgau)

The Bismarck tower in Freiburg im Breisgau belongs to a series of towers that were built in honor of Otto von Bismarck, the first Chancellor of the unified German state. It is located on the Schlossberg. It is 12.6 m (41 ft) tall and has a square base (5.8x5.8 m or 19x19 ft). The top of the tower can only be reached by climbing a ladder. Because of this it can not be used as an observation deck.

Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).