The area known as "Great London" occupies the territory of about 1.8 thousand square km.The City of London is the commercial centre of all the country.The Tower of London is an old castle, situated in the City.Wesminster is the aristocratic, official part of London.London has 30 museums.Visitors of London are surprised by the famous Madam Tussaud's Exhibition, which was opened in 1802.London has more than 80 theatres.London is the centre of education and science.The East End of the capital includes the Port of London, Docks and the poorest districts.The streets of London are always of great interest to tourists.