The Florianturm is the TV tower of Dortmund and was built in 1959 as an attraction for a federal horticultural show with a height of 219.6 metres (720 ft).
It consists of a reinforced concrete tube, which tapers off as it rises, reaching a height of 129.75 metres (425.7 ft).
On the upper observation deck there are installations and aerials of Deutsche Telekom.
Since then, a 50-kilowatt transmitter has transmitted digital terrestrial television programmes for the Dortmund area.
Since 7 September 2004, the Florianturm has a height of 208.56 metres (684.3 ft), making it the fourteenth highest structure in Germany.