Paris' versatility is nowhere more visible than on a night out. Begin your evening with ostentatious cocktail-sipping at Place Vendome, finish up with a beer in cosmopolitan Belleville, and you just might feel like you've changed countries. Whether you yearn to mingle with the fashion set or experience a grittier night scene, a memorable night out is virtually guaranteed. We've reviewed the hottest Paris nightlife spots to help you adapt your dress and wallet and faire la fête (party) Parisian-style.