Gustav Vietor Tower
Germany
The 186th tallest tower in the world
The Gustav Vietor Tower was one of the earliest steel lattice observation towers to be built in Germany. Constructed of stone and steel in 1882–3 on the Hohe Wurzel mountain near Wiesbaden in Hesse, the 23-metre-tall tower was demolished in 2006, having been closed to visitors 20 years earlier, although it remained in use by radio amateurs.
Building data from Wikidata (CC0); heights normalised. Summary from Wikipedia (CC BY-SA).