20. NAZCA LINES IN CALIFORNIA
The famous geoglyphs found scattered across the south of Peru has left everyone baffled because of the strange designs which you can only see from the sky. Surprisingly, America has their own Nazca Lines in Blythe, California. The geoglyphs in Blythe are called the Blythe Intaglios and they include giant human figures engraved into the California desert. The geoglyphs date back between 450 and 2,000 years ago and can only be seen from the sky. Researchers suggest the Mojave people made them, but no one knows their purpose.