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Lençóis Maranhenses: Brazil's dune-filled expanse that sits at the intersection of 3 biomesLençóis Maranhenses National Park hosts sand-dune fields that fill up with lagoons every wet season, but the reserve also has mangrove swamps where species such as the scarlet ibis thrive.
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Sørvágsvatn: The lake that 'floats' above the ocean thanks to a unique optical illusionSørvágsvatn, also called Leitisvatn, is the largest lake in the Faroe Islands. Viewed from a certain angle, one side appears to hover above the Atlantic Ocean.
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Bandera Volcano Ice Cave: The weird lava tube in New Mexico whose temperature is always below freezingDue to a weird quirk of geology, New Mexico's Bandera Volcano Ice Cave never warms above 31 degrees Fahrenheit, even when temperatures outside exceed 100 F in summer.
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Chocolate Hills: The color-changing mounds in the Philippines that inspired legends of mud-slinging giantsThe Chocolate Hills are 1,776 mounds on Bohol Island in the Philippines where grassy cover turns brown during the dry season.
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Avenue of the Baobabs: Madagascar's natural monument with dozens of 'mother of the forest' treesThe Avenue of the Baobabs preserves the remnant trees of an ancient tropical forest on Madagascar.
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Spotted Lake: Canada's soda lake with colorful brine pools that are smelly and slimy 'like the white of an egg'Spotted Lake is a soda lake that evaporates every summer, leaving a white crust with circular brine pools that can appear blue, green or yellow.
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Coconucos volcanic chain: Colombia's stunning cluster of volcanoes, lost in an otherworldly landscapeThe Coconucos volcanic chain is a mountain ridge dotted with at least 14 volcano craters, including one that is active and erupted in December 2025.
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China's Great Green Wall: The giant artificial forest designed to slow the expansion of 2 desertsSince 1978, China has planted more than 66 billion trees along its 2,800-mile-long northern border, and it wants to plant 34 billion more over the next 25 years to complete its "Great Green Wall."
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Sistema Ox Bel Ha: A vast hidden system that's the longest underwater cave in the worldThis incredible submerged cave network is the longest of its kind in the world and plays a vital role in the region.
