Half-hidden by grassy slopes, this striking Spanish colonial fort is now a museum of underwater archaeology.

The walls of a colonial-era fort encircle a small, tropical assortment of plant life.

Volcanically heated hot springs.

Experiencing Guatemala's sensory-exploding church is a blunt reminder of European influence.

The displays in this off-the-beaten-path museum highlight the holistic, indigenous methods of healing.

Mexico’s first and only Tzotzil Maya bookbinding workshop.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

A luxurious doomsday bunker hidden beneath an unassuming Las Vegas home offers the best of subterranean suburbia.

This jail which was in service for over a century is now open for curious visitors.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

An industrial waste tourist attraction.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

An outlandish shoe shaped house built by an eccentric millionaire.

The Home and murder site of the witch of Rehmeyers Hollow.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

Narrow gorges and deep pools created by long-ago glaciers.

The graffitied ruins stand hidden within the Pennsylvania woods.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

Irontown was founded in 1868, as a second attempt to mine iron from the nearby Iron Mountain.

A relic of World War I that now exist as a piece of public art.

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.