When I returned from visiting Louise, I walked through London, between Marylebone and St. Pancras rail stations. It was a lovely sunny walk and the BT Tower kept "winking" at me, so I took its picture.
The BT Tower is a communications tower located in Fitzrovia, London and is owned by BT Group. It has been previously known as the Post Office Tower, the London Telecom Tower and the British Telecom Tower.
The main structure is 177 metres (581 ft) tall, with a further section of aerial rigging bringing the total height to 191 metres (627 ft).
In 1962, while still under construction, the BT Tower overtook St Paul's Cathedral to become the tallest building in London. Upon completion it overtook the Millbank Tower (which had been constructed faster) to once again become the tallest building in both London and the United Kingdom, titles it held until 1980, when it in turn was overtaken by the NatWest Tower.