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Gomantong Caves, Malaysia - If cockroaches gross you out, then this place might not be for you... you'll find millions of them there!

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Gomantong Caves, Malaysia - They mainly feed off the bats' feces, but they'll also eat any animal that might fall on the cave's floor.

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Antarctica - From the end of March until September, Antarctica is wrapped in darkness and temperatures plunge to -60ºC.

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Antarctica - Russian station Vostok recorded the lowest temperature ever to be felt on Earth's surface: -89.2ºC.

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Death Valley, USA - Death Valley gets its name from being the hottest and driest place in North America.

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Death Valley, USA - The desert spans over 225 km, and temperatures can reach the 46ºC.

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Mud volcanoes in Azerbaijan - Many regions in Azerbaijan are unlivable because they're covered in mud volcanoes.

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Mud volcanoes in Azerbaijan - The volcanoes are frequently active, erupting large amounts of mud.

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The Death Road, Bolivia - The Yungas road, which connects La Paz to Coroico is 56 km long and it was built in the middle of the Andes at over 3000 m above the sea level.

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The Death Road, Bolivia - The dirt road is so narrow that, at times, there's only space for one car to go past. The Death Road is also often covered in fog and records show there are between 200 to 300 deaths there every year.

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Manchac Swamp, Louisiana - Manchac has a reputation for being haunted, but most of its residents are actually crocodiles. Some of the scenes of Hillary Swank's 'The Reaping' were shot there.

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Manchac Swamp, Louisiana - Centuries ago, the swamp was a well-known place for voodoo magic. People said they saw zombies in the area, and land owners used to perform human sacrifices there so they'd attract prosperity.

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Sedlec Ossuary, Czech Republic - This eerie church is entirely made of human bones.

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Sedlec Ossuary, Czech Republic - The church was built by woodcarver and carpenter Frantisek Rint.

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Ohio University, USA - Wilson Hall, a young girl known for being an 'alleged witch,' committed suicide after writing satanic things on her bedroom wall at campus - with her own blood.

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Ohio University, USA - The five cemeteries around the university campus can be connected to form a pentagram with the admin building at its center, which many considered to be the 'symbol of the devil.'

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Bhangarh, India - The city of Bhangarh is known for its mysterious ruins. Located between Jaipur and Alwar, the city was left abandoned at the end of the 18th century.

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Bhangarh, India - Legend says that guru Balu Nath allowed the to be built, so long as the shadows of the temples didn't engulf his house. However, at the end of the century, an ambitious constructor built a temple on top of the late guru's house, and the whole city was cursed.

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Auschwitz concentration camp, Oświęcim, Poland - Poland's largest concentration camp was used by the Nazis during World War II, under Hitler's regime.

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Auschwitz concentration camp, Oświęcim, Poland - It is estimated that almost three million people died there from 1942 until early 1945. Auschwitz was liberated by the Soviet troops in January 1945. Tourists can visit the camp now, which is easily one of the eeriest places on the planet.

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Winchester Mystery House - After the death of her husband and son, Sarah Winchester (the daughter of the rifle's inventor) consulted a fortune teller, who said her family had been cursed by the spirits of all those who died because of the Winchester rifle. Sarah was told the only way to calm down the spirits was to keep doing construction work on the mansion.

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Winchester Mystery House - So Sarah Winchester kept building and building, and now the huge property boasts 160 rooms, staircases that lead nowhere and doors that open to walls.

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Catacombs of Paris - A major tourist attraction in France, the catacombs are home to the bones of seven million Parisians.

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Catacombs of Paris - Only some sections of the bone-covered tunnels are open to the public.

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Tower of London - Construction began under William the Conqueror in the 11th century, and the Tower of London served as a political prison and place of execution. It's considered to be one of the most haunted buildings in Britain.

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Tower of London - Among the ghost sightings, there was Henry VIII's wife Anne Boleyn, Lady Jane Grey (spotted by a guard on 12 February 1957, which marked the 403rd anniversary of her death) and Thomas Beckett.

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Gettysburg Battlefield - The Gettysburg battle lasted three days and it was one of the bloodiest in American history, with around 50,000 soldiers dying on the battlefield.

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Gettysburg Battlefield -

Many believe the region is haunted by the spirits of young soldiers unable to accept their premature death.

See also: Why are people being evacuated because of 'concrete'?

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