London is one of the most visited cities in the world, attracting around 30 million visitors every year.But why is it that the UK's capital city has such pulling power?From its foundation in Roman times over 2,000 years ago, we take a look at the things that have shaped this magnificent city and made it the fascinating destination that it is today. 'You find no man, at all intellectual, who is willing to leave London.No, Sir, when a man is tired of London, he is tired of life; for there is in London all that life can afford' Samuel Johnson'In London, everyone is different, and that means anyone can fit in' Paddington Bear