In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

This historic national park is covered in the stunning ruins of red rock pueblos.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

A mysterious spirit totem at the edge of Navajo lands.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

See no evil, hear no evil, speak no evil.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

A castle that was built stone by stone by an eccentric journalist.

A library of rare occult books in Los Angeles.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

A museum and tribute to a brave profession.

Once a year, at exactly 11:11 a.m., this monument comes to life.

The unusual burial monument of Arizona's first governor.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

This hidden gem reveals the history of Britain's first police force.

This monument to the victims of a tragic explosion is said to turn and look at passing cars.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

An extensive collection of fine art devoted to man's best friend.

One man's unrequited love stands in a glass box forever.

This museum presents a dogged pursuit of 500 years of veterinary history.

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

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

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

A remarkably opulent mansion with a tragic history.