Throughout most of London's history, the height of buildings has been restricted. These restrictions gradually eroded in the post-war period (except those protecting certain views of St Paul's Cathedral). High rise buildings have become ever more numerous since, particularly in the 21st century. Skyscrapers are now numerous in the City of London financial district and Canary Wharf: a new financial district created in the 1980s and 90s in the former London docklands area of the Isle of Dogs. Recent tall buildings include the 1980s skyscraper Tower 42, the radical Lloyd's building by Richard Rogers, One Canada Square: the centre piece of the Canary Wharf district and 30 St Mary Axe (nicknamed the "Gherkin") which has set a precedent for other recent high-rise developments built in a similar high-tech style. Renzo Piano's The Shard completed in 2012 is the tallest building in London and for many years in the European Union, as well as the sixth-tallest building in Europe and the 96th-tallest building in the world
