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1. The Wave, Arizona - A mesmerizing sandstone formation in the Coyote Buttes region.
2. Giant's Causeway, Northern Ireland - Hexagonal basalt pillars on the coast.
3. Arches National Park, Utah - Natural arches and red-rock formations abound.
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4. Ayers Rock (Uluru), Australia - Sacred monolith in the Outback.
5. Moeraki Boulders, New Zealand - Large, spherical boulders on the beach.
6. Stone Forest, China - Limestone formations resembling trees.
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7. Fairy Chimneys, Turkey - Cone-shaped rock formations in Cappadocia.
8. The Great Dune of Pyla, France - Europe's tallest sand dune near Bordeaux.
9. Sugarloaf Mountain, Brazil - Iconic peak in Rio de Janeiro.
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10. Trolltunga, Norway - Dramatic cliff jutting out above Lake Ringedalsvatnet.
11. The Twelve Apostles, Australia - Limestone stacks off the coast of Victoria.
12. Spotted Lake, Canada - Unique polka-dotted lake in British Columbia.
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13. Bryce Canyon, Utah - Hoodoos and natural amphitheaters carved by erosion.
14. The Giant's Kettles, Norway - Whirlpool-like depressions in the rocks.
15. Meteora, Greece - Monasteries perched atop towering rock pillars.
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16. The Cliffs of Moher, Ireland - Majestic sea cliffs rising along the coast.
17. The Needles, South Dakota - Rock spires in the Black Hills.
18. Wave Rock, Australia - Wave-like granite formation in Western Australia.
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19. Mount Rushmore, South Dakota - Iconic presidential carvings in the Black Hills.
20. The White Desert, Egypt - Surreal limestone formations in the Western Sahara.
21. The Devil's Tower, Wyoming - Intriguing igneous rock column sacred to Native Americans.
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22. The Blue Mountains, Australia - Eucalyptus-covered peaks and rock formations.
23. Zuma Rock, Nigeria - Monolithic rock near the capital, Abuja.
24. The Door to Hell, Turkmenistan - Fiery crater in the desert burning since 1971.
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25. The Old Man of Hoy, Scotland - Sea stack off the coast of Orkney.
26. Valley of Fire, Nevada - Striking red sandstone formations near Las Vegas.
27. Belogradchik Rocks, Bulgaria - Unique rock formations in Northwestern Bulgaria.