5. Bangkok, Thailand
This city is undoubtedly one of a kind, offering an irresistible lure to partiers who don’t want to spend a lot. Located in the heart of South East Asia, this stunning metropolis is a wonderful combination of east and west, with buddhist temples and modern skyscrapers all around the city. Direct, low cost air fares from many U.S. cities are easy to find and Bangkok has a wide variety of hotels from super budget to as upscale as you can imagine.
The nightlife here is quite notorious, and you will experience real hangovers. To calculate the budget, think of Las Vegas, add better food, and subtract a few zeros from the end of your bill. If you want to go wild, go to Soi Cowboy or Patpong, extremely popular for the crazy nightlife!