3. Hang Son Doong

Vietnam is visited by millions of tourists each tear. If you are looking for the largest cave on the planet, you should go to Hang Son Doong. The cavern is huge – it’s spacious enough to house a small city with tall skyskrapers, supermarkets and banks. There are small sinkholes that allow sunlight to enter the cave. Thanks to this the cavern has a forest.

4. Fly Geyser

In Nevada they have a very unique location. When visitors come to the United States, they are offered to see Fly Geyser – one of the most popular tourist destinations in the country. It is unbelievable what nature can create and form. All it takes is time and lots of minerals. It is said that Fly Geyser appeared by chance. It all started in 1964, when people didn’t properly cap a man-made well. Later on a mound formed. It kept growing. You can still observe how water shoots out of what was once a well.

5. Painted Dunes

Another curious place for you to visit and see in the United States is called Lassen National Park. What you see may be easily compared to the views usually seen in the pictures taken on Mars or some other planet. The park attracts people since there are the legendary Painted Dunes. These Californian pumice fields are full of different colors and hues. The effect is the result of oxidation of the ash that has a volcanic origin.