Noisy, vibrant and truly multicultural, London is a megalopolis of people, ideas and frenetic energy. The capital and largest city of the United Kingdom, it is also the largest city in Western Europe and the European Union. Situated on the River Thames in South-East England, Greater London has an official population of a little over 8 million, but the estimate of between 12 and 14 million people in the greater metropolitan area better reflects its size and importance. Considered one of the world's leading "global cities", London remains an international capital of culture, music, education, fashion, politics, finance and trade. Among international tourists, London is the most-visited city in the world.
The name "London" used to refer only to the once-walled "Square Mile" of the original Roman (and later medieval) city (confusingly called the "City of London" or just "The City"). Today, London has taken on a much larger meaning to include all of the vast central parts of the modern metropolis, with the city having absorbed numerous surrounding towns and villages over the centuries, including large portions of the surrounding "home counties", one of which - Middlesex - being completely consumed by the growing metropolis. The term Greater London embraces Central London together with all the outlying suburbs that lie in one continuous urban sprawl within the lower Thames valley. Though densely populated, London retains large swathes of green parkland and open space, even within the city centre.
Greater London is all of the area surrounded by the M25 orbital motorway, and consists of 32 London Boroughs and the City of London that, together with the office of the Mayor of London, form the basis for London's local government. The Mayor of London is elected by London residents and should not be confused with the Lord Mayor of the City of London. The names of several boroughs, such as Westminster or Camden, are well-known, others less so, such as Wandsworth or Lewisham. This traveller's guide to London recognises cultural, functional and social districts of varying type and size: Read more