Angkor Wat stands as humanity's most magnificent religious monument, a breathtaking Khmer temple complex located in northwestern Cambodia near Siem Reap. Constructed in the early 12th century (approximately 1113-1150 CE) by King Suryavarman II, this architectural wonder covers 820,000 square meters featuring three concentric galleries, towering sanctuaries, intricate stone carvings, and elaborate moats representing Mount Meru's five sacred peaks. Originally dedicated to Vishnu before becoming a Buddhist temple, Angkor Wat exemplifies Hindu-Buddhist cosmology synthesized in stone. Designated a UNESCO World Heritage Site in 1992, Angkor Wat attracts approximately 2 million visitors annually and stands as Cambodia's most recognizable symbol, featured on the national flag.