A floating museum that was sunk by a flood and left to rot in the tides.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Two Ming Dynasty lion statues guard the entrance to the journalism school.

This is not your typical jungle gym.

A celebration of the animation wizard's childhood home and antique railroad memorabilia collection.

Who said a biker bar is no place for a taxidermy squirrel collection?

A subterranean haunt where wine and homemade biscottis are always on the menu.

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

A remarkably opulent mansion with a tragic history.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

A geological oddity formed by two rivers carving out a mass of limestone on both sides.

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

Erosion and time have created a naturally-formed water park.

Curious cave that stays a cool 56 degrees all year long.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

European castle ruins in an American state park are actually the product of death and grief.