PARIS - one of the most visited cities in the world. BUT do you know . . . Which is the most romantic spot to say 'je t'aime'? And the sexiest? Where to see fantastic art, away from the crowds? Why Parisian men feel compelled to pee in the street? How to choose a hotel room where you might actually get a good night's sleep? Stephen Clarke goes behind the scenes to reveal everything Parisians know about their city - but won't tell you.