The Post Office Tower, now known as the BT Tower, is a prominent telecommunications tower located in London, England. Completed in 1964, it stands at 189 meters tall and was originally built to support the UK's telephone network. The tower features a rotating restaurant that offers panoramic views of the city. The BT Tower was once a symbol of modernity and innovation in telecommunications. It played a crucial role in the development of microwave communication systems. Although it is no longer open to the public, the tower remains an iconic part of the London skyline and a significant landmark in the city's history.