Without any doubt Angkor Wat is the most spectacular place to visit in South-East Asia perhaps in all of Asia. It attracts millions of visitors from all over the world, nowadays specially from China, Japan and the neighboring countries. My 3rd visit there was in August of 2015.
Angkor Wat was first a Hindu, later a Buddhist, temple complex in Cambodia and the largest religious monument in the world. The temple was built by the Khmer King Suryavarman II in the early 12th century as his state temple and eventual mausoleum. Breaking from the Shaiva tradition of previous kings, Angkor Wat was instead dedicated to Vishnu. As the best-preserved temple at the site, it is the only one to have remained a significant religious center since its foundation. The temple is at the top of the high classical style of Khmer architecture. It has become a symbol of Cambodia, appearing on its national flag, and it is the country’s prime attraction for visitors.