East Central London covers areas of Whitechapel, Barbican Clerkenwell and Farringdon. The principal borough in this district is the City of London, and some parts of Tower Hamlets Westminster Islington Camden and Hackney are also Included in this area. It is a leading commercial and business district in the city and has been a centre of great importance since London became a capital. The museums and historical architecture in this area tell a story of the significance of East central London dating from when the Tower of London was built by William the Conqueror in 1078. Today the embassies, criminal courts and high-rise office buildings that occupy much of the area still speak of the importance and power commanded by this part of the city. Filled with notable high rises such as Tower 42 and The Shard, and places of worship like the infamous St. Paul's Cathedral and the East London Mosque, East central London is a melting pot of cultures, history, and innovation. Ambitious projects like The Shard, which took 5 cranes to build, and Millennium Bridge, which is regarded as an engineering feat, identify East central London as somewhere that continues to push the boundaries in terms of technology, progress and financial investment. East Central London Is also filled with arts culture and many tourist attractions such as The British Museum, the National and the Tate Gallery, and The Barbican Centre, a performing arts centre that hosts Theatre film exhibitions and concerts performed by some of London’s most prestigious orchestras.