Jakobsberg Telecommunication Tower is a 142-metre-tall TV tower built of reinforced concrete on the 238-metre-high elevated Jakobsberg near Porta Westfalica. Jakobsberg Telecommunication Tower was built May 1, 1974 and September 28, 1978 as replacement for a small telecommunication tower also equipped with an observation deck, which was built in 1952 on the siteof the former Bismarck column, erected in 1902.Jakobsberg Telecommunication Tower is equipped with a room for technical equipment in a height of 50 metres and an observation deck in a height of 23.25 metres. Its main purpose is the transmission of television and radio signals, since 2006 the television signals are sent in DVB-T.For access to the observation deck, there is a stairway running like a srewline around the tower. This sta