One of the last Art Deco gas station still standing in Dallas.

One of the world’s longest pedestrian suspension bridges.

A home that witnessed Civil War combat on the Sunken Road has the battle scars to prove it.

Home of Philip Johnson, one of the 20th century's most influential architects.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

One of the best examples of the modernist movement in Madrid.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

A roadside music shop featuring a confounding series of folk art installations.

The precious-metals strikes dating back to the 1860s are now mostly inactive, but this area has become the United States' only domestic source of lithium.

On the edge of this small Washington Park, a piece of the Earth's mantle has come to the surface.

Haunted by its violent past, this colonial bastion was the largest Spanish military installation in the Americas.

Odd outsider art installations surround a Gold Rush-era ghost town.

As fallout from an irrigation project, a formerly cottonwood-lined stream is now a sandy, desolate, post-apocalyptic channel lined with weathered stumps and tumbleweeds.

This 13th-century monastery chiseled into the side of a mountain is equipped with a bridge that can be lifted to protect against raids.

The "All-Seeing Eye of God" symbol on this library is a clue to one of the many former lives of this building.

This pub boasts a curious history and may have inspired a Dickens character.

One of the best-preserved early 20th-century ore-processing mills in Nevada is maintained in a state of arrested decay.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

These bamboo and rope bridges cross the Nam Khan River for six months every year.

Dine on dumplings at the oldest dim sum restaurant in New York.

The only gallery in New York dedicated to olfactory art and the exploration of scent in art.

Part arcade, part museum, this collection features vintage and modern pinball machines.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

The little-known final resting place of one of America's greatest writers.