This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

This collection of vintage signs reflects the long and colorful history of this Arizona town.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.

Victorian-era Egyptomania left its mark on this Nashville landmark.

An abandoned, rusty old relic of railroad history stands at attention over the Cuyahoga River.

When a guy acquired a free church, he hauled it away piece-by-piece to make it the tasting hall at his vineyard.

Just outside the Ohio Supreme Court sits a testament to justice.

This unique collection collects pieces of art etched into thin pieces of stone.

A headstone tells the sad story of a lost little boy and his pet dog.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

A museum that houses the world's largest collection of ventriloquism dummies.

These early tent-shaped grave coverings are unique to Appalachia.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

This replica of the Greek structure is in the heart of Nashville.

All that's left of the quintessential "cabin in the woods."

The secret city built by the Manhattan Project.

Home of an evil witch famous within southern folklore.

Enormous lake at the bottom of a unique cave system.

A rare particle accelerator with a tremendous energy range is tucked away at Ohio University.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.