This indoor ski resort has a mountain contained inside a mall.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

This abandoned secret city is a crumbling wonderland of Soviet ruins.

Lithuania's outdoor sculpture trail of wooden folk art.

Sculpture garden of religious statues made it through Soviet rule.

One of the world's largest ice festivals dazzles visitors for over a month with radiant sculptures and carvings.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

An incarceration museum on the spot of possibly the oldest prison in England.

The western-most fortress on the Great Wall of China has gone from a strategic stronghold to a kitschy tourist carnival.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

Halloween spirit is alive and well in this small town, where residents race motorized caskets in a yearly tradition.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This weekly market in the remote oasis city of Hotan still has the atmosphere of the old Silk Road.

Seat of the Duke and Duchess of Devonshire for centuries.

This haunting stone chasm is a hotbed of mossy rock and English legend.

The fairy tale castle of the "fairy-tale king."

A small but immensely extravagant palace built by the "Night King."

The sign at the garden gate reads: "These Plants Can Kill."

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

Have fun at the world's first Buddhist waterslide park.

This abandoned fort is said to be the most haunted place in India, so much so that entry is prohibited after sunset.

This man-made mound monument was built out of soil from all across the Polish empire.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.