Angkor Wat

Built as a temple to Vishnu by Suryavarman 2 in the 12th century, it's name means Temple That Is A City. It is completely overwhelming, and mysterious. It is thought to be a mausoleum for the king who built it as well, as it faces west, which is unusual, and symbolizes death. The murals, the statues, the huge walls that have survived all these centuries seem very much alive.