8. London Bridge Tower
Architect: Renzo Piano Building Workshop
The tallest building in the European Union, Renzo Piano's "Shard" towers above London Bridge and shifts the skyline of the Big Smoke south of the Thames. Piano designed the building in 2000 and in 2007 it was criticized by English Heritage as "A shard of glass through the heart of historic London." From the jibe, the structure got its name and rather than shame the city, it has proved a valued addition.