One of the world's largest ancient burial mounds.

A Japanese shrine to dolls.

A calico cat named Tama was the wildly popular Super Station Master at this train stop in southeast Japan.

A memorial to the murdered Jews of Kaunas.

A kindergarten shaped like a cat with a tail that's a slide.

Lithuania's outdoor sculpture trail of wooden folk art.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Sculpture garden of religious statues made it through Soviet rule.

A bizarre roadside attraction and the first instance of miniature golf in the world.

A museum dedicated to exhibiting remarkable outsider art.

An intriguing three-sided folly is a testament to one man's devotion to Catholicism and the number three.

The metal frame is all that's left of a wicker sculpture which once towered over the M5 motorway.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

A modern English garden of eccentric beasts, follies, and oddities.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

The place where houses are born.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

Paranormal activity on the great lakes.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

Covering 37 subterranean acres, this Armillaria gallic is a famous fungus with its own festival.

Large one-man sculpture park in Michigan.

A six-story-tall golden pyramid, surrounded by a moat.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

Whale bones, scrimshaw, and sperm oil make up just a part of this comprehensive collection of whaling history.