Bell Tower of Berlin Olympic Stadium, Observation tower at Olympic Stadium, Germany

The Bell Tower of Berlin Olympic Stadium is a 77.17-metre observation tower on the Olympiagelände in Westend, built 1934–1936 to Werner March's plans. Its steel skeleton is clad in limestone slabs, and the tower rises at the western edge of the Maifeld. An express lift serves the viewing platforms.

The tower was built between 1934 and 1936 to plans by Werner March for the 1936 Olympic Games, its steel skeleton faced with limestone. In 1947 British engineers blew it up after a wartime fire left it unstable. Werner March rebuilt it between 1960 and 1962 following the old plans.

The tower's base houses the Langemarckhalle, a memorial hall celebrating the "Mythos von Langemarck" with war commemoration and sacrificial death. From 2006 to 2019, rooms on the first floor and ground floor hosted the Deutsches Historisches Museum's multimedia exhibition "Geschichtsort Olympiagelände 1909 – 1936 – 2006". Renovation began in 2019, with the Sportmuseum Berlin planned to move into the tower long-term.

An express lift carries visitors up to the observation platforms. The tower is open daily from 1 April to 1 November. From the S-Bahn station Pichelsberg (lines S3 and S9), the route leads via Schirwindter Allee and Passenheimer Straße to the tower.

The original 9.6-ton Olympic Bell fell 77 metres when British engineers blew up the damaged tower in 1947 and cracked so badly it never rang again. It was buried to prevent metal theft, found again with metal detectors in 1956, and now stands as a memorial on the south side of the Olympiastadion.