The BT Tower
(formerly known as the Post Office Tower and, before that the GPO Tower) is a landmark in Birmingham
, and is also the tallest building in the city. Its Post Office code was YBMR. The original intention was to build a circular tower similar to the London
one but without the public floors above the aerial galleries. At one time the Post Office wanted to increase the height from 500 feet (150 m), which had been agreed by the Ministry of Aviation, to 600 feet (180 m).