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The Ksar Draa is a mysterious building lost in the dunes of the Sahara desert.

It is believed that during the day this deity emerged from the water and taught the human race arts, sciences and writing.

The earliest known astronomical observatory in the Americas was built by an unknown culture, long before the Incas rose to power in Peru and began to celebrate their Sun God.

Archaeologists from Turkey discovered the ruins of a castle belonging to the Urartu civilization during underwater excavations in Lake Van.

Chinese archaeologists have discovered the remains of "giants" who lived about 5,000 years ago and their bone structure shows they were unusually tall and strong.

Marco Aurélio, 15, was part of a group of four young people from the Olivetano Scout Group, led by Chief Juan Bernabeu Céspedes, who...

The asteroid's strange orbit may be the work of the gravity of an unknown planet.

A comet recorded by the Aztecs appears to have foreshadowed the arrival of the Spanish conquerors.