Believe it or not, it isn't magic.
It's Salar de Uyuni: the world's largest salt flat, spanning more than 4,500 miles in southwest Bolivia.
The massive salt flat was formed by two prehistoric lakes drying up, according to the Los Angeles Times. When the lakes dried up, they left behind large deposits of salt from the surrounding mountains.
Salar de Uyuni now provides around 50% of the world's lithium, the chemical found in batteries. But it also delivers one of the greatest photo opportunities on Earth: In Bolivia's summer, the salt flat becomes a giant puddle, reflecting the sky above for as far as the eye can see. It's even been called the "world's largest mirror."
From La Paz, travelers can either fly to Uyuni's airport or take a pretty lengthy bus trip.
At least the end result is worth it.