10 Most Incredible Lost Cities

2. Angkor, Cambodia

Angkor was a thriving city from the 9th till the 15th century and featured the Angkor Wat – the largest religious monument in the world. In the 15th century the city fell to decline, and was invaded and looted. The city was almost entirely abandoned and forgotten, but the temple built by the Khmer King Suryavarman 2 as his state temple and later mausoleum survived and today Angkor Wat is the most famous monument and most visited site in Cambodia. It has become the symbol of the country and appears on its national flag