This is 30 St Mary Axe, London, commonly known as The Gherkin. It’s not immediately obvious from this shot but towards the bottom of the building the walls actually taper inwards. This meant that when it rained, the water ran down the side of the building until the walls became vertical, then the water dropped straight down in a 360 degree waterfall, making it impossible to enter the building without getting soaked. A later modification put gutters on the outside to redirect the rain.
This is 20 Fenchurch Street, just down the road from the Gherkin, popularly known as the walky-talky because of its concave windowed side. Unfortunately, this faces south, and in the first summer after it was built the concave windows acted like a mirror, concentrating the sunlight onto the street. It burnt carpets, damaged cars and caused great discomfort for those walking past. The architect defended its design by claiming he thought the sun never shined in London.