Salar de Uyuni, the world's largest salt flat, measuring over 4,000 square miles was recently listed as one of the 25 wonders of the world, alongside better known attractions like the Taj Mahal, Grand Canyon and Great Wall of China. Stretched like a shimmering carpet amidst two distant Andean Peaks, the salt flat is home to pink flamingos, 1,000-year old cacti and rare hummingbirds.