Forget labels like 'Cool Britannia' and the 'Millennium City', London is far more than any neat term can encapsulate: a living, breathing metropolis whose influence resonates around the globe. It is a city laced with layer upon layer of intoxicating history, which began as the Romans set up camp along the River Thames. This meandering waterway became the lifeblood of the London that emerged over the next two millennia.