This natural gas crater has been burning for more than 50 years, earning it the eerie moniker.
Don Julian Santana Barrera gathered and hung dolls all over the island in memory of a young girl who drowned in a nearby canal.
Over 6 million people's remains lie in the city's labyrinthine tunnels, making for a creepy and macabre experience.
This site contains over 100,000 crosses left by pilgrims in memory of loved ones.
This cathedral, built within a salt mine, is an impressive feat of engineering as well as a unique religious site.
This natural rock formation, which resembles a giant's staircase, has inspired numerous legends and myths.
This forest of towering limestone formations looks like something out of a fantasy world
This stunning sandstone formation in Arizona looks like something from another planet
This grove of trees features over 400 bent and twisted pine trees, whose unusual shapes remain a mystery
Badab-e-Surt is a natural wonder in Mazandaran Province, Iran, known for its extraordinary and otherworldly landscape.
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