After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

An eerie, decaying ghost town destined to fade into the forest.

The land is home to swimming ponies and a legendary 18th-century treasure.

Bizarre Cavern.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

A unique arch graces the Dolores River Canyon near the Hanging Flume.

Historic, 19th-century wagon wheel ruts cut into soft volcanic ash.

A prehistoric rock shelter that's literally in someone's backyard.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

This eclectic collection documents the wild legacies of "America's Wickedest Street."

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

There are eight natural springs around town, each with a slightly different taste.

These decaying bridges 1,000 feet high are a reminder of the skill it took to cross the Colorado Rockies by rail.

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.