Vast, vibrant and truly multicultural, London is one of the world's great cities. Located in the southeast of England, on the River Thames, it is the capital of the United Kingdom and has been the heart of its political, cultural and business life for centuries.

The now sprawling metropolis is a far cry from the scrabble of dwellings that first sprouted up to house river traders during their voyages towards the sea. It was the Romans who really kick-started the city, by establishing ‘Londinium' as an important fortress town, guarding the Thames.

Over the centuries, London has developed and expanded, despite the many dangers that might have defeated a lesser place - the Plague, the Great Fire, the bitter English Civil War, a plot to blow up the Houses of Parliament, and the ‘Blitz' during WWII.

Nowadays, the sheer scale of Greater London can be daunting at first, although it is a city that is surprisingly easy to get around, with the comprehensive and easily navigated London Underground or ‘Tube'.

The twin axis on which London rests is the Houses of Parliament to the west and the City of London to the east. The seat of government (not far from the home of the royal family) is connected to the City (the financial engine room of London and the whole of the UK) by the River Thames.

In between lie most of the tourist attractions and the busiest, liveliest different entertainment areas, such as Knightsbridge and Soho. But London's vivacity and charm stretches far beyond the Circle Line - the Underground route that rings the inner city. Residential areas outside the city centre, such as leafy Richmond (southwest) or Hampstead (north), trendy Hoxton (east) or Notting Hill (west), each have their own charm and identity.

London's very real multiculturalism is evident on every street (and many restaurant plates) and is one reason why people love the city. Tourists come for London's history or royal pageantry but they return for all the charms of the modern city, not least the extraordinary breadth of London's cultural life, with world-class art galleries and theatres, buzzing nightlife, film, music, culinary and fashion scenes.

During summer, London's bountiful green spaces fill up with office workers and tourists enjoying the surprisingly balmy days as cafe tables sprout across pavements. During winter, the grey skies and rain can be forgotten for a while in numerous cosy pubs. But spring or autumn are probably the best seasons to visit the city, when clear crisp sunny days often illuminate London and its landmarks, old and new.