The world is a remarkable place, and this statement is backed up by the beauty that exists within nature. Mother nature is diverse, and there are many impressive rock formations, caves, and lakes, that can be found across the seven continents of the globe, but nature is also full of surprises and there are a few places that offer something unique.

What makes these places unique? This is the result of a combination of factors, including bright colors which can be found in places we wouldn’t normally expect to see them, for example, The Pink Lake of Senegal, and China's beautiful rainbow mountains. But there are also striped icebergs, spotted lakes, and other unusual patterns which make natural formations all the more interesting.

In fact, some are so unusual that they continue to baffle scientists and are thought to be natural phenomena. Take the sand circles in Namibia as an example, which has been the subject of much research and the topic of many theories. And other destinations are so beautiful that they have inspired myths and legends about how they came to be this way, like Giant’s Causeway. Below are 25 natural creations that look as though they may be from another planet.

24 The Marble Caves Took 6,000 Years To Form

There are few places in the world as beautiful as The Marble Caves, located in Chile’s Patagonian Andes, but there are also few places as fascinating. The Marble Caves are a set of caves that, as the name suggests, are set in marble.

According to Atlas Obscura, they formed over 6,000 years ago because of the lake's currents washing up against calcium carbonate, which slowly ended up carving the swirling blue patterns into the cave walls. And interestingly, the color of these caves reportedly changes depending on the water levels and the season.

23 The Richat Structure Looks Like An Eeerie Bull's Eye From Space

The Richat Structure, or the Eye of Africa, as it’s sometimes called, is one of nature’s many wonders. Located in the western Sahara Desert in Mauritania, it is around 25 miles across and is considered a natural phenomenon. And one that still puzzles scientists, Business Insider reports.

This geological formation can be seen in its full glory from space and was once thought to be a crater impact site. However, according to Forbes’ researchers suspect it is actually the remains of a dome of layers of the Earth’s crust.

22 The Pillars In The Zhangjiajie National Park Inspired 'Avatar's Pandora

If you’ve ever watched Avatar, you most probably would have been impressed by the beauty of the fictional world of Pandora. But Pandora’s floating mountains were actually inspired by the sandstone pillar’s found in Zhangjiajie National Forest Park, located in the Hunan province of China.

According to The Poort Traveler, among the series of around 3,000 quartz-sandstone pillars is the Southern Sky Column, which stands at an impressive 1080-meters. In 2010, in honor of the film, the pillar was renamed to Avatar Hallelujah Mountain.

21 There Are Few Lakes As Bright As The Pink Lake of Senegal

Seeing a body of water that is bright pink is unusual, it is also mesmerizing. Lake Retba (Lac Rose) is the Pink Lake of Senegal, located on the Cap-Vert peninsula, and it gets its name for obvious reasons; the water is a beautiful pink hue.

According to Afro Tourism, this lake has been a popular attraction for the country and it is so special because it contains high levels of salt. The salt attracts a special bacteria, the Dunaliella Salina bacteria, which produces a red pigment, and gives the lake it’s unusual color.

20 Canada's Spotted Lake Is Yet Another Example Of How Fascinating Mother Nature Is

The world is home to many unusual bodies of water, including the Spotted Lake in the British Columbian province of Canada.

It is in the summer months when this lake is truly remarkable. Mother Nature Network notes that when the water evaporates, it leaves behind a series of briny pools. the result of the high concentration of minerals which are found within the water. This gives the lake its spotted appearance.

Dependent on the minerals found within these pools, the colors can range from yellow and green, to blue.

19 The Caño Cristales Isn't Your Average Stream Of Water Thanks To The Algae Living In It

The Colombian river, Caño Cristales, is not your typical stream of flowing water, instead, its a river that can turn a brilliant red color because of the plant species Macarenia clavigera, which lines the river floor, Atlas Obscura reports.

But these bright colors can only be seen during a brief period of the year, and Culture Trip reports that the best time to visit would be between July and October. The publication also notes that the river is impacted by weather and climate conditions, which can affect the algae and can make it appear less red.

18 Striped Icebergs' Unique Patterns Make Them A Natural Wonder

When you think of icebergs you think of a mass of freshwater ice floating in the open water, but not all icebergs are created equal, and Antarctica's striped icebergs are more impressive than regular icebergs.

According to Amusing Planet, striped icebergs get their unusual colors (which can be brown, blue, green, yellow and black) because of the organic matter and minerals found in seawater. The different layers of the icebergs can form unique patterns, created by the wind and waves.

17 Belize's Blue Hole Deserves Its Place On The UNESCO World Heritage List

The Great Belize Blue Hole is something that can be seen in its full glory from the sky. According to the Belize website, the hole is actually an underwater sinkhole off the coast of Belize and is the largest natural formation of its kind.

The circular shape is a rich blue color, as the name suggests, and measures 300 meters across and 125 meters deep. It is a natural formation that is truly remarkable, and according to Belize Travel Blog, the formation is part of the Belize Barrier Reef Reserve System and is also a UNESCO World Heritage Site.

16 The Waitomo Glowworm Caves Is The Magical Destination We Thought Only Existed In Dreams

A destination that is truly magical is New Zealand’s Waitomo Glowworm Caves, which has become a popular destination for both tourists and locals who wish to marvel at its beauty.

There are tours of the cave, making it a site that is accessible to many. According to the Waitomo website, the Arachnocampa Luminosa (or glowworm) is unique to New Zealand, and travelers can enjoy a boat trip through the caves which are home to the thousands of luminescent creatures which light up the roof of the cave.

15 Bolivia's Salar de Uyuni Was Once A PreHistoric Lake

The Salar de Uyuni, located in the Andes in southwest Bolivia, is the largest salt flat in the world. It formed when a prehistoric lake went dry many years ago, National Geographic reports. What was left behind is a thick crust of salt, which has become a natural wonder, and a tourist attraction.

According to Worldly Adventurer, the rainy season is the best time to visit as the salt flat turns into a mirror-like surface which shows the reflection of the sky, and makes for a fantastic photo opportunity (although the downside of this time of year is reportedly the mud).

14 The Cave of the Crystals Was Discovered By Accident During A Mining Operation

The Cave of Crystals lay undiscovered until around 18 years ago, when, according to Travel + Leisure, twin brothers who were mining underneath Mexico’s Naica Mountain in Chihuahua stumbled upon one of the most beautiful caves in the world.

The cave is located 300 meters below the Earth’s surface, and according to the publication, some of these crystals are so big that can are over 36 feet and can weigh up to 55 tons. Researchers believe that some of the oldest crystals have been growing for 500,000 years.

13 Giant’s Causeway's Magnificence Has Inspired Myths And Legends

Located in County Antrim in Northern Ireland is a spectacular black basalt rock formation known as Giant’s Causeway, which has inspired tales of giants traveling across the ocean from Scotland to Northern Ireland, reports.

The rock formation is made up of regularly shaped polygonal rocks, which date back millions of years. As for how they came to be this way? It is believed that these rocks are the result of volcanic activity during the Tertiary, some 50–60 million years ago, UNESCO reports.

Giant's Causeway is a UNESCO World Heritage Site because of its geological importance.

12 Namibia’s Sand Circles Continue To Baffle Scientists

In Namibia’s desert, there are a series of sand circles -- which can grow to 25 meters wide -- and these unique patterns continue to baffle scientists.

According to The Guardian, the circular patterns are often referred to as “fairy circles” and have become the subject of research, with scientists having many theories about the causes of their creation. These theories include the belief that termites are building colonies beneath the ground, eating the vegetation beneath the soil and causing the dead patches on top, or it could be the competition between desert grasses. Either way, these circles are fascinating.

11 The Salt Pan Of Chott el Djerid Is The Closest Thing To Mars On Earth

Chott el Djerid is a salt lake in Tunisia, and the largest salt pan in Africa. It is also a destination that some scientists believe is the closest thing to Mars on Earth, Science Daily reports.

The publication notes that for most of the year the lake is completely dry and has a thick crust of sodium chloride, it is also red in color because of the high iron content. This environment is believed to be similar to “closely layered deposits of chloride salts discovered at Martian high latitudes by recent missions, such as Mars Odyssey.”

10 Bioluminescent Waves On A Beach In The Maldives Make For A Special Sight

The Maldives is already one of the most beautiful destinations for a vacation, and the fact that there is a beach on the island that has bioluminescent waves, only makes it more appealing for the traveler.

According to Kuoni, the glow-in-the-dark effect is a result of bioluminescent plankton called dinoflagellates. These plankton use the chemical luciferin to emit a blue light, which the publication reports is a “cold light” as it generates less than 20 percent heat. The plankton’s bioluminescent may be beautiful to humans, but it is actually as a defense mechanism to protect against predators.

9 Rainbow Eucalyptus Trees Get Their Bright Colors Because Of How Often They Shed Bark

It’s not every day you see a tree that looks similar to a rainbow because of its unique coloring, but the rainbow eucalyptus has bark in many colors, giving it a very unusual appearance. According to Pura Vida Tropicals, the reason for the different colors of bark is because this tree sheds its bark multiple times a year, revealing the new inner bark underneath, which is a vivid green color. When the bark dries, it can reportedly become blue, purple and even orange in color.

8 The Zhangye Danxia Landform Geological Park Is Home To A Rainbow Mountain

The mountains within the Zhangye Danxia Landform Geological Park are a UNESCO World Heritage Site, and look as though they are something straight out of a painting, with their vibrant colors, consisting of reds, greens, yellows, and blues. It's hard to believe that this is a natural formation, but China’s rainbow mountains exist, and span across 200 square miles, Forbes reports.

The publication notes that the mountains are formed by Cretaceous sandstones and siltstones, which contain minerals and iron that are responsible for the unique coloring.

7 At The Center Of The Eternal Flame Falls Burns A Bright Flame

You don’t typically associate a waterfall with a burning flame, but a small waterfall located in the Shale Creek Preserve in Western New York combines these two things. In the center of the waterfall is a flame; the result of natural gas caused between old and very hot shale rocks, Atlas Obscura reports.

This makes the Eternal Flame Falls a spectacular sight, and a destination which is visited by many hikers, although the terrain can be treacherous if hikers do not stick to the path because of the elevation changes.

6 Silfra Shows A Rift In The Earth, And It's One Of The Most Spectacular Diving Spots

There is a place where you can see a rift in the Earth, and it’s called the Silfra crack, located in the Thingvellir National Park in Iceland. The crack is between North America and Eurasian tectonic plates (which run through Iceland), and according to Amusing Planet, it is particularly visible in the pure Icelandic waters, where the water temperature remains around 2°C to 4°C year round.

The location is visited by snorkelers and divers, and according to Guide To Iceland, it is considered one of the top five dive sites in the world.

5 Madagascar's Logging Has Created Extreme Soil Erosion With Fascinating Consequences

Central-North Madagascar is home to the Betsiboka River, which is more than 500 kilometers long. But it’s not just the length of this river that makes it worth noting, but also the interesting patterns it has created because of the soil erosion. According to Earth Observatory, this is caused by the extensive logging in the region, which has left land without trees, thus allowing for erosion during the rainfall.

The red hills are washed into the streams and the rivers, and then to the coast, leaving behind some very interesting patterns.