This was once the center of the Birdman cult, and is now a World Heritage Site.

A tiny, remote island packed with wonders both natural and geeky.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

Australia's only active volcanoes and highest peak are located on these remote islands thousands of miles away from the mainland.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

Once a bustling cotton factory, this early 20th-century building is now home to a thriving artspace.

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

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

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

A crumbling cliffside ruin hidden in the woods.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

The graffitied ruins stand hidden within the Pennsylvania woods.

The remnants of a 19th-century ironmaking complex hidden in the woods of Connecticut.

This eight-mile stretch of road gets its name from a local legend about a lost soul searching for his head.

A 19th century family buried their dead among the pines, beneath gravestones styled after ancient Scottish cairns.

The 19th-century ruins hide deep in an overgrown forest.

These unique stained glass windows were designed by local children using a modern flair.

Constructed from bricks salvaged from a former dormitory destroyed in a fire.

This house designed by Frank Lloyd and Louis Sullivan was destroyed twice and reconstructed to near original condition.

A blues musician so talented that people said he must have traded his soul to the devil was born in this house.

A parade of interactive nostalgia nestled within a giant brick building in downtown Hattiesburg.

This humble hole-in-the-wall is home to an incredible pig ear sandwich and serious civil rights history.