Earth Day: Most Odd Places on the Planet

First celebrated in 1970 in the United States, this event went global in the 1990s with the observance since spreading to over 141 countries in various corners of the globe.

Sputnik's gallery for the occasion offers you a glimpse of some of the most spectacular sights on the planet – the planet thousands of people are toasting today.

1 / 10

"Gates of Hell" burning crater in the Karakum desert, Turkmenistan. This infernal sight is a product of a burning natural gas field that collapsed into a cavern.

2 / 10

Devil's Bridge, Germany. This structure was designed to create a circle, one half of which is formed by the bridge itself and the other is formed by the bridge's reflection in the water.

3 / 10

Crooked forest Krzywy Las near Gryfino in Poland. How exactly these trees adopted these crooked shapes remains a mystery.

4 / 10

The Danxia landform in China.

5 / 10

Ijen crater in Ijen Volcano, Indonesia

6 / 10

Misterios fairy circles (patches of land devoid of vegetation) on Namib Desert. The origin of this phenomenon is as yet unclear.

7 / 10

Aokigahara Forest. Located at the base of Mount Fuji, this forest has long enjoyed a mystic reputation.

8 / 10

The Blood Falls (an outflow of saltwater colored by iron oxide) seeps from the end of the Taylor Glacier into Lake Bonney, Antarctica.

9 / 10

The Island of Dolls (La Isla de las Munecas), is littered by dolls of various styles that were left by the island's original owner in Mexico who supposedly wanted to appease the spirit of a drowned girl.

CC BY 2.0 / Kevin / La Isla de las Munecas

10 / 10

Castle made out of corals, US.