BT Tower – London

The BT Tower (formerly Post Office Tower) in London is an iconic, Grade II listed communications landmark, built in the 1960s as a vital microwave relay for UK telecom, becoming the nation’s tallest building until 1980. Known for its distinctive cylindrical design, revolving restaurant (now closed), nuclear-resistant build, and pop culture appearances, it continues as a comms hub and was recently sold by BT to MCR Hotels, with plans for future development.