Roughly 3,000 years after their settlement, a new culture arrived and constructed substantial urban centers: Nan Madol on Pohnpei and Leluh on Kosrae. Both sites feature similar construction.

Nan Madol is a series of more than 100 islets off the south-east coast of Pohnpei that were constructed with walls of basalt and coral boulders. These islets harbour the remains of stone palaces, ...

Nan Madol is a monumental complex, built from stone and coral rubble on the Pacific Island of Pohnpei. Nan Madol was the administrative and cultural center of the Saudeleur Dynasty.

Archaeologists believe that Nan Madol was a prominent city from 1100 to 1628 AD and its decline started with the fall of the local Saudeleur monarchs in the 17th century.