The ancient stone city on the island of Pohnpei in Micronesia is Nan Madol.
Nan Madol is a ruined ceremonial and political centre built on a coral reef flat beside Temwen Island, off Pohnpei in the Federated States of Micronesia. Its builders created a network of artificial islets separated by tidal canals, using coral fill and enormous basalt stones. The site’s name means “within the intervals,” referring to those waterways.
Nan Madol became the seat of the Saudeleur dynasty, which ruled Pohnpei until about 1628. Construction of its distinctive megalithic architecture began around AD 1180–1200, although human activity in the wider area is older. The complex’s core contains about 92 artificial islets, including royal tombs, priestly residences, food-preparation areas, and ceremonial spaces.
Nan Madol is sometimes called the “Venice of the Pacific,” but it was not simply an ordinary city or fortress. It primarily served an elite religious and administrative purpose. Stories that attribute it to a lost continent or supernatural builders are not supported by archaeology; Pohnpeian ancestors built the complex.