The FM- and TV-mast Olsztyn-Pieczewo (also known as Maszt RTCN Olsztyn-Pieczewo) is a 365 metre tall guyed mast for FM and TV situated at Olsztyn-Pieczewo in Poland (Geographical Coordinates: 53°45′11.94″N 20°31′5.33″E / 53.7533167°N 20.5181472°E / 53.7533167; 20.5181472 The FM- and TV-mast Olsztyn-Pieczewo, which was built in 1969, is since the collapse of the Warsaw radio mast the tallest structure in Poland.