City Hall, London
City Hall is the home of the Mayor of London and the London Assembly. It was designed by Foster + Partners and stands at 45 meters high. It's one of the most "green" buildings to grace London, with solar panels on the roof and a shape that minimizes the energy needed to power and cool the building.
For more information about City Hall, please visit www.london.gov.uk/city-hall/the-building/key-facts