The fifth-longest natural arch in the world, and the longest outside China.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

A house carved into a rock in the 1940s.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

Ruins of a historic medical facility sits eerily by the water.

Inside a state forest, the forgotten remains of a Cold War defensive installation.

This roadside wonder is as mysterious as it is beloved.

An abandoned Victorian-era mill in the middle of modern Manchester.

After decades of neglect, a brutalist icon is getting new life as an eco-friendly hotel.

Amazing views of Long Island Sound can be seen from this mountaintop tower.

The Cadillac Ranch for monster truck aficionados.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

Here, exhibits come with a side of edible history.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Avoid gangster interaction while window-shopping.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

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