Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

An ever-growing collection of rare and strange objects owned by local Arkansas illusionist Maxwell Blade.

A museum devoted to osteopathy and its creator, Andrew Still.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Tools, pottery, and mummies showcase the history of La Palma's native people.

This former military installation was turned into a discipline center by the Taiwanese Navy.

This medieval castle was home to a known tyrant and features several hidden passages.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

This museum of miniature displays provides a journey through early American history.

The oldest European burial ground in Australia.

This smiling statue memorializes local cartoonist Bob Montana and his legendary creation.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

She become one of the first women to serve in the United States military by secretly dressing like a man.

The remains of the man who founded Pennsylvania lie in an unassuming grave in the English countryside.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

A magician and his beloved, pampered canine were buried together, within days of each other, due to a tragic twist of fate.

A creepy statue of a hooded ghost hauls itself up from the water in a historic Lithuanian city.

Abandoned figurines adorn a small plot on the side of a craft market's entrance.

A small curiosity shop with items ranging from antique medical supplies to taxidermied animals.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

This memorial in the Adirondack wilderness honors the accidental death of a Scottish entrepreneur.

This curious headstone is labeled simply as "The Queen."

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

The cellar of a former factory is now home to a collection of gloves, machines, and tools of the trade.