Oh, nature. Sometimes it's a little too easy to forget how crazy, amazing and humbling our planet is.
From the the peaks of China's floating mountains to the depths of the Great Blue Hole, there are some natural phenomena that can help us truly appreciate the big old marble we're living on.
So, without further ado, here are 17 natural wonders to make you say "wow."
If you get a touch of wanderlust, click on the names to jump to a map for all of your travel-planning needs (or just check out the satellite view).
Yucatan Cenotes -- Mexico
Cenotes are natural sinkholes found throughout Mexico that form when the roof of an underground cavern collapses. Many of them are connected via a string of underwater rivers that create some of the most striking subterranean scuba diving you've ever seen.
Zhangjiajie National Forest Park -- Hunan, China
The Zhangjiajie National Forest Park is filled with incredible sandstone columns stretching thousands of feet into the sky. The pillars were worn away by erosion over thousands of years, and one of them was renamed the "Avatar Hallelujah Mountain" in honor of the similarly named film.
The Great Blue Hole -- Belize
The Great Blue Hole is just that, a massive underwater sinkhole stretching 1,000 feet across and 412 feet deep, surrounded by a ring of coral reefs. Jacques Cousteau declared the site one of the world's top 10 scuba diving destinations in 1971.
The Salar de Uyuni -- Bolivia
The Salar de Uyuni is the world's largest salt flat, an arid surface of minerals stretching for miles that turns into the one of the planet's largest mirrors during the rainy season.
Skaftafell National Park -- Iceland
Svartifoss waterfall in Skaftafell National Park was formed as dark lava columns were worn away by erosion. The columns were formed inside a lava flow that cooled very slowly.
Pamukkale Travertine Pools -- Turkey
These travertine pools in Pamukkale, Turkey were formed by a series of hot springs that created these petrified waterfalls. They have remained a popular tourist destination ever since being claimed by the Turkish and Roman empires in the 2nd century B.C.
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This astronaut photograph taken on Nov. 27, 2010, provides a view of tidal flats and channels near Sandy Cay, on the western side of Long Island, and along the eastern margin of the Great Bahama Bank, on the islands of Bahamas. The continuously exposed parts of the island are brown, a result of soil formation and vegetation growth. To the north of Sandy Cay, an off-white tidal flat composed of carbonate sediments is visible; light blue-green regions indicate shallow water on the tidal flat.
Egypt's Lake Nasser was photographed in January 2005 from the International Space Station.
Tassili n'Ajjer National Park, part of the Sahara Desert, has a bone-dry climate with scant rainfall, yet it doesn't blend in with Saharan dunes. Instead, the rocky plateau rises above the surrounding sand seas. This image from 2000 was made from multiple observations by the Landsat 7 satellite, using a combination of infrared, near-infrared and visible light to better distinguish among the park's various rock types.
Cloudless skies allowed a clear view of dust and hydrogen sulfide plumes along the coast of Namibia in early August 2010. Multiple dust plumes blow off the coast toward the ocean, most or all of them probably arising from stream beds. Unlike the reddish-tan sands comprising the dunes directly south of the Kuiseb River, the stream-channel sediments are lighter in color. Wind frequently pushes dust plumes seaward along the Namibian coast.
The Nile River and its delta look like a brilliant, long-stemmed flower in this astronaut photograph of the southeastern Mediterranean Sea, as seen from the International Space Station on Oct. 28, 2010. The Cairo metropolitan area forms a particularly bright base of the flower.
The snow-capped volcanoes composing the Islands of the Four Mountains in Alaska's Aleutian Island chain look suspiciously like alien worlds in this August 2010 image from the ASTER camera aboard NASA's orbiting Terra satellite.
This NASA image shows the aurora australis observed from the International Space Station on May 29, 2010. This aurora image was taken during a geomagnetic storm that was most likely caused by a coronal mass ejection from the sun on May 24.
Astronauts at the International Space Station captured this striking view of the Sarychev volcano on Russia's Kuril Islands in an early stage of eruption on June 12, 2009. Sarychev Peak is one of the most active volcanoes in the Kuril Islands chain.
NASA's Terra satellite was rounding the top of the globe -- making its way from the eastern tip of Siberia and across the Arctic Ocean toward northwest Russia -- when it captured this unique view of a total solar eclipse on Aug. 1, 2008. In the area shown in the image, the sun was obscured for about two minutes. As Earth rotated, the shadow moved southeast across the surface. At the same time, the satellite crossed the Arctic with its path nearly perpendicular to the eclipse.
The Advanced Land Imager on NASA's Earth Observing-1 satellite shows a snowy blanket over Fargo, N.D., on Dec. 12.
Astronauts captured this image highlighting the northern entry to Mount Everest from Tibet on Jan. 6. Climbers travel along the East Rongbuk Glacier, shown on the lower left, to camp at the base of Changtse mountain.
The south end of Eleuthera Island in the Bahamas shimmers in turquoise waters in this 2002 photo from the International Space Station.
A massive sandstorm sweeps over Qatar as it races south toward southeastern Saudi Arabia and the United Arab Emirates on Feb. 15, 2004. A major upper-level, low-pressure system over southwestern Asia led to a series of storms sweeping through the area. The crew of the International Space Station captured this image with a digital camera using a 50-millimeter lens.
Flowers grow year round in sun-drenched Kenya, and nowhere are they more plentiful than Lake Naivasha, shown here. In this view from space, bright white squares mix with fields of green, tan and purple along the shores of the lake. Sunlight glints off the long rows of glass greenhouses, turning them silvery blue and white. Fallow fields are tan and pink, while growing plants turn the ground bright green. Roses, lilies and carnations are the most common flowers grown in the greenhouses and fields scattered around the lake.
High above the African continent, tall, dense cumulonimbus clouds, meaning "cloud heap" in Latin, are the result of atmospheric instability. The clouds can form alone, in clusters or along a cold front in a squall line. The high energy of these storms is associated with heavy precipitation, lightning, high wind speeds and tornadoes.
The new images were taken over 22 days by a satellite imaging system and provide the most detailed look yet at the world's night lights.