1. Crooked Forest, West Pomerania, Poland.
This grove of oddly-shaped pine trees was planted in 1930.
2. Sea of Stars, Vaadhoo Island Maldives
This shimmering phenomenon is created by bioluminescent phytoplankton in the reef and occurs only in the late summer.
3. Salar de Uyuni, Potosí , Bolivia
Salar de Uyuni in southwestern Bolivia is the world's largest salt flat. It was created when a prehistoric lake evaporated and left behind a 11,000-sq.-km desertlike landscape of bright-white salt and rock.
4. The Door To Hell, Karakum, Turkmenistan
Also known as the Darzava Gas Crater, tourists from all over flock to see the crater of fire erupting in the middle of the desert. After geologists set it on fire to prevent the spread of methane gas, it has been burning nonstop since 1971.
5. Tunnel of Love, Klevan, Ukraine
Known for being a place for couples to take walks, the Tunnel of Love is an industrial railway surrounded by green arches. It is 3-5 kilometers in length.
6. Mendenhall Ice Caves, Juneau, Alaska
Inside the 12-mile-long glacier are piercing blue ice caves, where water runs over rocks and under frozen ceilings. Unfortunately, due to climate change, these ice caves have receded almost two miles since 1958, compared to them receding only 0.5 miles since 1500.
7. Blue lava of Kawah Ijen Volcano, Java Island, Indonesia
Blue lava is produced because of high levels of sulfur in the volcano.
8. Bamboo Forest, Kyoto, Japan
The sound created by the swaying bamboo stalks has gained national designation as one of the "100 Soundscapes of Japan."
9. Glowworm Caves, Waitomo, New Zealand
These caves are populated by Arachnocampa luminosa, a glow worm species found only in New Zealand.
10. Mount Roraima, Gran Sabana, Venezuela
Look familiar? Ever seen the movie Up? This floating island which inspired the setting in the Disney film, is 7671 feet above the forest floor in Gran Sabana, Venezuela.
Also see Angel Falls
11. Marble Caves, Patagonia, Chile
Located in General Carrera Lake, the biggest lake in Chile, this intricate system of caves was created by the erosion of calcium carbonate cliffs by water.
12. Vinicunca Rainbow Mountain, Andes, Peru
The seven colors are due to different mineral compositions that the mountain has.
13. Kjeragbolten, Lysebotn, Norway
This boulder wedged between the mountain of Kjerag has become a popular tourist attraction.
14. Caño Cristales, Meta, Colombia
Known as the "river of five colors," the colors of Caño Cristales are created when aquatic plants in the river reproduce.
15. Reynisfjara, Reykjavik, Iceland
The Reynisfjara beach is black due to volcanic ashes.
16. Giant's Causeway, Ireland
An ancient volcanic fissure eruption resulted in over 40,000 interlocked basalt columns.
17. Red Beach, Liaoning, China
The landscape is composed of the red plant by the name of Suaeda salsa.
18. White Sands National Monument, New Mexico, US
The white sand appeared after bodies of water evaporated and left behind a mineral called Gypsum. Gypsum is the same material used for chalk and plaster.
19. Morning Glory Cloud, Cape York, Australia
Seabreezes on Cape York collide from two directions, west and east, forming a cloud. That cloud then descends as night falls. The air cools and slides beneath a layer of warm air, resulting in a rolling cylinder. These pipeline-shaped clouds move across the sky at speeds of up to 25 miles per hour.
20. Die Rakotzbrück, Gablenz, Germany
The reflection of this 19th century bridge creates a perfect circle.