Answer by Sumeet Yadav:
Though, there are many places on Earth, which are both beautiful and unusual at the same time.
I'll list a few of them which I find really fascinating. To know more about them, check the links posted at the end of the answer.
Keibul Lamjao National Park, Manipur, India
It is the only floating national park in the world and occupies an area of 40 sq. km. It is located in North East India and is an integral part of Loktak Lake.
Ice Towers on Mount Erebus, Antarctica
Mount Erebus is the hottest place on the breezy continent as it’s the only active volcano there.
Fingal’s Cave, Scotland
The breathtaking Fingal’s Cave in Scotland gives you impression that someone has built it. The perfect hexagonally jointed basalt columns were formed during many years when the hot lava was cracked into perfect hexagonal patterns in a similar way to drying mud cracking as it shrinks, and these cracks gradually extended down into the mass of lava as it cooled and shrank to form the columns, which were subsequently exposed by erosion.
Wave Rock, Hyden, Australia
The Wave Rock derives its name by its form, which looks like a giant ocean wave ready to break everything on its way.
Great Blue Hole, Belize
The Great Blue Hole in Belize is world wide known as one of the greatest diving sites. The almost perfect circular hole is part of the Lighthouse Reef and is 450 meters deep.
Weird but breathtaking! Pamukkale means “castle of cotton” and the place is cottony indeed. This snow-white, landscape of iced terraced frozen pools and small waterfalls is NOT ICE – it is limestone and travertine. Earthquakes in the area resulted in emergence of a number of very hot springs having large mineral content, calcium bi-carbonate in particular. This has created an awesome and beautiful snow like terrain.
Fraser Island Dune, Australia
Fraser Island is considered to be the largest sand island in the world at 1840 km².
White Desert, Egypt
The White Desert in Sahara had been underwater in ancient times, but now it is above the sea level and the chalk figures formed with millenniums can be seen today.
Hell's Door, Turkmenistan
It was formed with little human help, when in 1971 Soviet experts ordered drilling in the cavern filled with loads of natural gas, which roof collapsed leaving a hole with 60-70 meters diameter.
Hiller lake, Australia
It is a lake on Middle Island, the largest of the islands and islets that make up the Recherche Archipelago, Western Australia. The pink coloration of the lake water could be from a sea salt and nahcolite (sodium bicarbonate) deposit reaction as well as red halophilic bacteria in the salt crusts. It is such a significant distinguishing feature of the archipelago that air passengers often take note of it. Also, the colour is permanent, and does not alter when the water is taken in a container.
Racetrack Playa (Sliding Stones), United States
This one is the most fascinating of all. There isn't a scientific explanation of this bizarre phenomenon of sliding stones. It is located in the Death Valley, California and it is one of the flattest places in the world.
It is believed that the winds are responsible for this weird phenomenon, but the rocks are never filmed or pictured while moving.
Stone Forest, Madagascar
The breathtaking karst formations were formed from both vertical and horizontal erosions and is located in the Tsingy de Bemaraha National Park in Madagascar.
Himalayas and Pangong Lake, India
Highest and most beautiful place on Earth
Troll Wall, Andalsnes, Norway
Base jumper's Paradise. The Troll Wall is the tallest vertical rock face in Europe, about 1,100 metres (3,600 ft) from its base to the summit of its highest point.
Toyama Bay, Japan
Surf washed up on shore thousands of glowing jellyfish that normally live at great depths,
and only during the breeding lifted to the surface. Though, it's not always you can see this kind of thing, but it will be great to see it happening in front of one's eyes. This one happened on 28th March, 2012. Also, notice the city lights behind.
Neptune's Grotto, Italy
It is a stalactite cave near the town of Alghero on the island of Sardinia, Italy. The cave was discovered by local fishermen in the 18th century.
Source: To know more about the places mentioned and a few more,
I suggest you to follow the links, the places are much more fascinating than the pictures suggest.