The Great Wall of China, China
The Great Wall of China attracts throngs of tourists every year, creating a veritable traffic jam of people. The Badaling and Mutianyu sections are two of the most popular parts of the wall — in 2013 alone they saw more than 10 million visitors.
Despite these mind-boggling numbers, though, the wall is a true piece of ancient history. The 2,150-mile long stretch that still exists today dates back as far as the 14th century and makes up the longest wall in the world. Plus, visiting the Jinshanling section might help you beat some of the crowds.