West End of London the Square Mile, is the main business and financial district in London, the West End is the main commercial and entertainment centre of the city. It is the largest central business district in the United Kingdom, comparable to Midtown Manhattan in New York City, Causeway Bay in Hong Kong, Shibuya in Tokyo, or the 8th arrondissement in Paris. It is one of the most expensive locations in the world in which to rent office space. Medieval London comprised two adjacent cities - the City of London (cathedral: St. Paul's) to the east, and the City of Westminster (cathedral: Westminster Abbey)
History of the London Underground early years of the 20th century, UD signs appeared outside stations in central London. World War I delayed extensions of the Bakerloo and Central London Railways, and people used the tube stations as shelters during air raids in 1915. After the war, government-backed financial guarantees were used to expand the network, and the tunnels of the City and South London and Charing Cross, Euston and Hampstead Railways were linked at Euston and Kennington, although the combined service was not named the Northern line until later. The Piccadilly line was extended north to Cockfosters and took over District line branches to