Nan Madol: The Mysterious Ancient Coral Reef City

Nan Madol is the only ancient city ever built upon a coral reef.  It is comprised of a set of almost 100 stone and coral filled platforms atop artificial islands separated by narrow channels and enclosed by an outer seawall. Nan Madol includes the remains of stone palaces, temples, tombs and residential domains.

Despite the enormity of the undertaking in building the city, no records exist regarding when exactly it was built, where the enormous rocks came from, how they were transported there, and for what reason Nan Madol was constructed on top of a reef.

A Globally Significant Masterpiece of Creative Genius

UNESCO has finally paid attention to the immense historical significance of Nan Madol, a mysterious ancient coral reef city off the island of Pohnpei in Micronesia, by placing it on the World Heritage List. Describing it as a “globally significant masterpiece of creative genius”, Nan Madol is an engineering marvel, but it has not yet given up all its secrets.