Nan Madol, UNESCO World Heritage Site
"In his house at R'lyeh, dead Cthulhu waits dreaming."
Off the coast of a remote Micronesian island lay the ruins of a once-great city of man-made stone islands that inspired the city of R'lyeh in H. P. Lovecraft's Cthulhu Mythos.
Impressive in their own right, these ruins represent the remains of megalithic architecture on an unparalleled scale in Micronesia.
Evidence of the earliest human activity dates back to the first or second century BC. The construction of artificial islets started probably about 8th and 9th century AD. However, the megalithic structures were built in period of 12th to 13th century, about the same time as the stone construction of the Cathedral of Notre Dame in Paris, or Angkor Wat in Cambodia.