All over the world there are mysterious monuments from ancient times that conjure up many weird and wonderful theories about who built them and for what purpose. For that matter, future archeologists may ponder how the Brooklyn Bridge was constructed using the primitive technologies available at the time. Join us in a journey to the past by taking this quiz.
They called it a wasteland with no trees or shrubs.
There are about 1,000 monolithic human statues.
They weigh up to 86 tons.
Visitors wonder how the inhabitants could have erected these huge sculptures without materials for rope or lumber.
It is believed they were simply status symbols and the race to one-up their competitors ultimately led to their annihilation.
Teotihuacán in Mexico is believed to have housed some 200,000 inhabitants.
It is known as the Avenue of the Dead.
There are no royal tombs or artwork to supply clues about the original builders and inhabitants.
Constant bloody conflicts and repeated sackings and burnings led to it being abandoned.
It means "place where men become gods".
It was a summer resort for the Inca king.
American explorer Hiram Bingham discovered it in 1911 and today it is the most-visited tourist attraction in Peru.
During the summer there were up to 750 residents.
It was built from interlocking walls of smooth polished stones without mortar.
Exactly how they managed to hoist 20-ton stones up the steep mountain cliffs without wheels remains a mystery.
The workers found mysterious large stone spheres buried in the forest floor.
These near-perfect spheres were carved using stone implements, since the early craftsmen did not have access to metal tools.
Archeologists believe that the carvings began about 600 A.D.
It is a huge collection of stone structures believed to be the sunken relics of an ancient world located off the shores of Japan.
He believes it is a mixture of both manmade and natural structures.