• Located at the foot of the Hochschwab Mountains, in Tragoess, Styria,

Green Lake is one of the most bizarre natural phenomena in the world. During the cold winter months, this place is almost completely dry, and used as a country park where hikers love to come and spend some time away from urban chaos. But as soon as temperatures rise, the snow and ice covering the mountaintops begin to melt, and the water pours down, filling the basin below with crystal-clear water.

• Salar de Uyuni, Bolivia

World's largest salt flat, located at about 12,000 ft above sea level. During the rainy season, the water turns this place into the world's largest mirror. The mirages from the sky's reflection create a sense of infinity or walking among clouds. Tourists are only able to travel to this location via a hot air balloon.

It is referred to as the border between heaven and earth.

• Saint Cecil Cathedral, Albi, France