Angkor Wat.

Angkor Wat is the world’s largest religious structure, a massive 12th-century complex that transitioned from a Hindu monument dedicated to Vishnu into a major Buddhist pilgrimage site. It is defined by its architectural scale: five central sandstone towers rise in a stepped formation meant to symbolize the celestial Mount Meru, surrounded by a vast moat and nearly 400 acres of ruins. Beyond its famous silhouette—best viewed at sunrise when the towers reflect in the surrounding water—the temple is celebrated for its dense narrative bas-reliefs that wrap around the galleries, depicting Khmer history and Hindu epics. As the heart of the former Khmer Empire, the site serves as both a feat of ancient engineering and a powerful symbol of Cambodian identity that remains active today.