The Berliner Funkturm or Funkturm Berlin (Berlin Radio Tower) is a former broadcasting tower in Berlin. Constructed between 1924 and 1926 to designs by the architect Heinrich Straumer, it was inaugurated on 3 September 1926, on the occasion of the opening of the third Große Deutsche Funkausstellung (Great German Radio Exhibition) in the grounds of the Messe Berlin trade fair in the borough of Charlottenburg-Wilmersdorf. Nicknamed der lange Lulatsch ("the lanky lad"), the tower is one of the best-known points of interest in the city of Berlin and, while no longer used for broadcasting purposes, it remains a protected monument.