Salar de Uyuni, Bolivia
Salar de Uyuni, the larger of the two Bolivian salt flats, contains an astounding 10 billion tons of salt and covers over 4,000 square miles. That makes it the largest salt flat in the world, more than 20 times bigger than America’s largest, in Death Valley.
Lake Retba (Lac Rose), Senegal
Just under an hour from Dakar, the capital city of Senegal, sits this naturally pink lake. Lake Retba, or Lac Rose, gets its distinctive color from a bacteria that produces a red pigment in order to absorb the sunlight.