Jahrtausendturm

Jahrtausendturm (millennium tower) is, at 60 metres (200 ft), one of the highest wooden towers in the world. It was established on the occasion of the Bundesgartenschau 1999 in the Magdeburger Elbauenpark in Magdeburg, Germany. The tower houses an exhibition on the development of sciences, which is supported by many descriptive experiments with which the visitor can interact. One notable example is a powerful telescope through which visitors can observe the distant clock-face on the Magdeburger cathedral.

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