Bucket List - Angkor Wat
Angkor Wat was first a Hindu, then subsequently, a Buddhist temple complex in Cambodia and the largest religious monument in the world.
The only other country flag in the world that features a national monument is the current flag of Afghanistan. Images from Angkor Wat also appear on many denominations of the riel banknote.
Construction on Angkor Wat began in the early 12th century and continued for about thirty-seven years. It was built in the time period of the Khmer, in the reign of Suryarmen II, who reigned from 1113 AD to 1150 AD.