&#34;Salar de Uyuni, Bolivia&#34;  The World&#39;s largest salt flat, located about 12,000ft above sea level. During the rainy season, it turns into the world&#39;s largest mirror, the reflection of the clouds and the sky on the water creates a sense of infinity. Tourists are only able to travel to this location via hot air balloon.  It is known as the border between Heaven and Earth