Special Report

50 Natural Wonders You Must See to Believe

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31. Perito Moreno Glacier
> Location: Argentina

Unlike the glaciers on earth that are shrinking or disappearing, the Perito Moreno Glacier spans 121 square miles and is growing. A boat trip through Lake Argentino around the base of the glacier is the safest way to get close to the ice and witness its sheer mass.

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32. Lake Hillier
> Location: Australia

Located on an island inaccessible to tourists, the bubblegum pink Lake Hillier is only viewable to the public by air. Though scientists haven’t confirmed the exact cause of the pink waters, they’re most likely due to a combination of high salinity, algae, and bacteria.

Source: Aitormmfoto / Getty Images

33. The Giant’s Causeway
> Location: Northern Ireland

Made of a patchwork of 40,000 interlocking basalt columns, the Giant’s Causeway is a volcanic formation over 50 million years old. The site, which has inspired many local legends, is an important geological zone for the study of volcanic activity during the Tertiary period.

Source: Rachid Chbani / Getty Images

34. Jeita Grotto
> Location: Lebanon

Jeita Grotto is a limestone cave system spanning about five miles and containing an underground river and the largest known stalactite in the world. It was inhabited by ancient people and rediscovered in 1836.

Source: PawelG Photo / Getty Images

35. Vaadhoo Island
> Location: Maldives

Bioluminescent phytoplankton in the waters around Vaadhoo Island create the illusion of a sea of blue stars lapping the shores at night. Though a handful of beaches across the globe are famous for their glowing phytoplankton, some consider the concentration of illuminated water around Vaadhoo the best display in the world.