London offers stiff competition for L.A. and New York when it comes to celebrity-filled hotels. Along with Old World favorites such as Langham Hotel London and The Savoy, Metropolitan Hotel brings in the stars. And these aren't any ol' B-listers! Among the guest list (so far): Madonna, Tom Hanks, Johnny Depp, Kate Moss, Cameron Diaz and Jude Law. Perhaps they like the break from traditional style, since the décor here is contemporary and chic, and rooms offer the added bonus of floor-to-ceiling windows overlooking the London skyline. After dinner at on-site Nobu, head to Met Bar where star sightings are almost always guaranteed.