Angkor Wat, built between 1122 and 1150 during King Suryavarman II's reign, is over 870 years old. Initially a Hindu temple dedicated to Vishnu, it later became a Buddhist site, showcasing a unique blend of religious significance. This architectural masterpiece, the largest religious structure globally, symbolizes Mount Meru, reflecting the Hindu cosmos. Its westward orientation distinguishes it from other temples, representing a departure from traditional eastward temple orientations​.