Hidden Global Cities That Are Under the Radar but Full of Character

16. Salar de Uyuni, Bolivia – The World’s Largest Mirror

During the rainy season, Salar de Uyuni, the world’s largest salt flat, transforms into a perfect mirror of the sky, creating one of the most surreal landscapes on Earth. Stretching over 10,000 square kilometers, this otherworldly expanse of white salt and reflective water feels like a portal to another dimension. Visit the Isla Incahuasi, an island covered in giant cacti, or stay in a hotel made entirely of salt. Whether you come for mind-blowing photography or to experience the sheer vastness of this natural wonder, Salar de Uyuni is truly unforgettable. Best time to visit: January–March (rainy season for the mirror effect) or May–November (dry season for geometric salt formations).