Angkor, Cambodia

Once the capital of the Khmer Empire, Angkor is a UNESCO World Heritage Site and includes the famous Angkor Wat, which dates back to the 12th century. Despite being rich in history, Cambodia is inexpensive, with a three-day pass to see the temples costing about $40 and most meals costing less than $3. Medium-range hotels start at $10 a night in the Siem Reap area.