Hünenburg Observation Tower is a 40 metre tall observation tower on Hünenburg at Bielefeld. It was built in 1952 as standardized telecommunication tower on the site of the Three-Emperor-Tower, which was demolished before.
In 1972 a new larger telecommunication tower, the Hünenburg Telecommunication Tower was built. Afterwards it was rebuilt into an observation tower, whereby the antenna decks were removed and some intermediate ceilings were installed. Today, it houses a museum with its history and the history of Hünenburg Telecommunication Tower and a restaurant.