An enormous park-like oasis, full of famous Chicagoans' graves.

A lush green oasis in the middle of Chicago.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

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

Salaguti's live-in museum: a fortress against criticism and consumer art.

This historical manor is complete with a magnificent garden.

The surviving remnants of a destroyed medieval church now stand in a public park.

This enchanting green space houses a labyrinth lined with toxic plants.

An outsider folly near Madrid.

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

The medieval legend behind this holy well was one of the inspirations behind "Alice's Adventures in Wonderland."

A garden of massive sculptures sits in Jean Lindard's backyard.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

Germany has its very own Centralia, whose spark remains attributed to "spontaneous combustion."

Sleep amongst an abundance of art from the modern era.

A private garden of sculptural eccentricities.

This chest hospital with a dark, haunted past serves as a fitting set for horror films and a paradise for ghost hunters.

Nestled within a German forest is an intriguing, growing rock.

The bizarre home and sculpture garden of an eccentric artist.

A whimsical garden of outsider art in the Spanish countryside.

This outdoor library provides around-the-clock access to around 7,000 books.

Ancient cave tombs known as the "houses of fairies."