Where are the ruins of the ancient city of Carthage located?
What happened to the treasure of the legendary pirate Sir Francis Drake?
What caused the strange disappearance of the Viking settlements in Greenland?
Where is the hidden treasure of the Incas in the mountains?
Where are the ruins of the ancient city of Teotihuacan?
What is the mystery of the disappearances of the Roanoke Colony?
Where is the entrance to the lost city of Machu Picchu?
Where is the lost city of the Maya in Central America?
What is the mystery of the uncharted islands of the Pacific Ocean?
What caused the strange lights observed over the Mediterranean Sea?