Tallinna Teletorn (Tallinn TV Tower)

From Wikipedia:

The Tallinn TV Tower (Tallinna teletorn) is a free-standing structure with an observation deck, built to provide better telecommunication services for the 1980 Moscow Summer Olympics regatta event (see Yachting at the 1980 Summer Olympics). It is located in Tallinn, Estonia. The tower has a specification height of 314 metres (1030.2 ft), some sources state 312.6 metres (1026.6 ft). Building is administered by a public company Levira (formerly Estonian Broadcasting Transmission Center Ltd) and is a member in World Federation of Great Towers.

The tower was designed by architects David Baziladze and Juri Sinis. The cornerstone was laid in September 30, 1975, and the building was inaugurated in July 11, 1980. The tower body is constructed of reinforced concrete rings 50 centimetres thick, weighing a total of 17,000 metric tons, with total weight being approximately 20,000 tons. The tower survived a fire during construction stage.

The observation deck, which was originally designed to have a rotating section, is located 170 metres above ground, and has a diameter of 38 metres. Besides stairs, it can be accessed by two express elevators, taking 45 seconds to travel to the top.