This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

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

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

A Wild West jailhouse that slid down the mountainside.

A spiritual vortex among the red rocks in Sedona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

An urban laboratory.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Visitors flock to see this church tower's unintended feature: It happens to resemble a giant chicken from multiple points of view.

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This free, take-a-book shop seems like a trick but isn't.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

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

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

The trials and tribulations of marking Poe's grave.