Paul Prince Photography

The building has an unusual shape which was intended to reduce the building's surface area and thus improve energy efficiency. It has been compared variously to Darth Vader's helmet, a misshapen egg, a woodlouse or a motorcycle helmet. London Mayor Ken Livingstone referred to it as a "glass testicle". Its designers reportedly saw the building as a giant sphere hanging over the Thames, but opted for a more conventionally rooted building instead. The building has no front or back on conventional terms but derives its shape from a modified sphere.

Designed by Norman Foster it opened in July 2002.

Location: London

Photographer: Paul D Prince