20 mind-boggling optical illusions you can find in nature

Tech Insider : Travel, Travel, Business
bolivia salt flats optical illusion
This salt flat in Bolivia is perfect for creating optical illusions.

iFerol/Shutterstock

10 optical-illusion buildings that will play tricks on your eyes

Tech Insider
People interact with a large-scale installation art piece by Argentinian artist Leandro Erlich, entitled
Those people were all lying on the ground, and the "building" is actually a giant mirror.

John Phillips/UK Press via Getty Images; JUSTIN TALLIS/AFP/Getty Images

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