Photo credits

Tiwanaku – Gate of the Sun Photo by Byelikova_Oksana on iStockphoto.com

Voynich Manuscript Photo by Historic Collection / Alamy Stock Photo

The WOW! Signal Photo by Archive PL / Alamy Stock Photo

The Moai of Easter Island Photo by RachelKramer on iStockphoto.com

Stonehenge Photo by Ahrys Art on iStockphoto.com

Nazca Lines Photo by Beth Wolff43 on iStockphoto.com

Puerta de Hayu Marca Photo by Adrian Wojcik on iStockphoto.com

Clay Pot Photo by by klosfoto on iStockphoto.com

Antikythera Mechanism Photo by ZUMA Press, Inc. / Alamy Stock Photo

Temple of Jupiter in Baalbek Photo by kateafter on iStockphoto.com

Great Pyramid of Giza Photo by WitR on iStockphoto.com