One Canada Square of London."" One Canada Square was originally designed to be high at 55 storeys, but that penetrated the permitted projection height of the flight obstruction area of the airport approach district to London City Airport, but this was extended to a height of above kerb level in consideration of the fact that One Canada Square was on the external zone of the airport approach. To comply with air traffic safety regulations, the architects took five floors off the tower. The final height of was permitted, otherwise, the developers would have had to dismantle what was necessary to fit the height
1 Thibault Square 1 Thibault Square 1 Thibault Square, formally known as the LG Building and originally known as the BP Centre, is a modernist skyscraper on the European-style Thibault Square at the end of St George’s Mall, Cape Town, South Africa. Work on the building began in 1969 and was completed in 1972. As of 2014 it is the second tallest building in Cape Town. The 34-degree diagonal twist, which puts it on a north-south axis, reduces sun loads on the façades, thereby reducing pressure on the air-conditioning system. To further shield the façades, a pre-cast screen is mounted on every floor,