Tramp, London, U.K.

Legend has it that the the original champagne wars began in Tramp, when one Saudi Prince challenged a certain Greek shipping magnate in a race to see who could buy, and spray, more Balthazars of Vintage Krug.

Some would say not much has changed and certainly Tramp's Saturday nights remain infamous for excess. Securing membership can take up to a year but your best bet is to cozy up to Guido (look for an animated Italian in a white dinner jacket) and see whether you can bump your way up the list.