Petra, Jordan (Credit: Dave Bouskill)
The ancient city of Petra, Jordan is an architectural masterpiece. Built into the side of a rock cliff, Petra was carved as early as 312 BC. Petra was named a UNESCO World Heritage Site and was unknown to the western world until 1812.
Machu Picchu, Peru (Credit: Mypetyak on Flickr)
Hike up the Peruvian mountain ridge where Machu Picchu sits and you will see the peak of Inca civilization. This beautiful place was built in 1450 and was only occupied for ~100 years until the Spanish Conquest.