5. The Netherlands
Hot spots: Amsterdam, Rotterdam, the Hague
No brainer, right? In Am'dam, you can party until 6am at the Rembrandtplein bars, then wet your whistle well into the next day at the city's after-hours clubs. And the country’s policy of non-enforcement means you’ll never miss out on the Dutch coffee shop scene. Finally, if you'd enjoy the simple pleasure of a woman's company but struggle to say, "Come here often?" in Dutch, the red-light district offers all the delights of the flesh.
Don’t miss: King's Day (formerly known as Queen's Day) on April 30th, when orange-clad locals turn the town -- streets, canals, all of it -- into an open-air madhouse of revelry.