9: Nan Mandol
On the Micronesian island of Pohnpei, there exists a mysterious ruin city of stone, known as the “Venice of the Pacific”. Up till today, it is not known how the city, made up of giant stone blocks, was constructed, since none of the peoples living in the area have been known to possess the required knowledge to pull off such a feat.
Nan Mandol can be connected to all kinds of legends, from the lost continents of Lemuria or Mu to black magic, witchcraft and extraterrestrials. So it’s a real world complex of ruins of mysterious origins. The local people’s legend has it, that the complex was built by two sorcerers aided by a dragon, so there is plenty of room for interpretation and “gamification”.