Teotihuacán is a large ancient city located in what is now the San Juan municipality. It was the largest pre-Columbian city in the Americas during the first century AD, and peaked between 150AD and 450AD where it dominated Mesoamerica with had a population of between 150,000 and 250,000 people.

Not so much a mystery, its more of a strange custom of the Shuar Indians of present day Ecuador and Peru. A shrunken head is a real human head that has been prepared for display.

Around 1930, in a mine about 100 miles southwest of the Mexican city of Chihuahua, buried underneath a human skeleton a mysteriously deformed, smaller skeleton was discovered. Dubbed Starchild, this skull has some very abnormal features, not seen anywhere else.

Easter Island is a small island in the South Pacific Ocean, which belongs to Chile. The island is most famous for its Moai (stone statues) carved from volcanic basalt along the islands coastline.

The lost civilization of Atlantis is a story told throughout the ages. The first documented accounts are from around 355 BC by Greek philosopher Plato in the first part of his planned trilogy.

Stonehenge is one of the most famous megalithic monuments located on the Salisbury Plain in Southern England. Its construction and purpose have been a constant source of mystery.

In 1901 divers working off the isle of Antikythera found the remains of a clockwork device that is estimated to be around 2,000 years old.

The Stone Spheres of Costa Rica are a collection of over 300 almost perfect spherical orbs first discovered in the Diquis Delta in the 1930’s. They vary in size from a few centimeter to several meters, the larger stones weigh nearly 16 tonnes.

The Great Pyramid (the Pyramid of Khufu) at Gizeh, Egypt, demonstrates some puzzling questions about its placement and alignment. The Pyramid lies in the centre of gravity of the continents. It also lies in the exact centre of all the land area of the world, dividing the earth’s land mass into approximately equal quarters.

The Nazca lines and also pictograms are huge pictures drawn into the desert around 1500 years ago by the ancient Nazcan culture. Not only is the reason for their construction a mystery, but also how they were able to draw straight lines over one hundred metres long.