Art in the form of a winding, man made crack in stone.

These subterranean storage areas hold emergency water reserves.

This former water source for the City of Brooklyn is now a thriving natural wetland.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

Designed by famed 20th-century architect Cass Gilbert, the future of this abandoned 1908 rail station is currently in limbo.

A riverfront park that both remediated and preserved its industrial past.

Learn about the history and craftsmanship of carousels inside this museum located in a former post office.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

On a wall in Cleveland, Ohio find the story of a highly connected fictional community of organisms that created remarkable, lasting structures.

See the computer’s history revealed over the course of 20,000 years.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

At this site, two historic stone bridges spanning the Sing Sing Kill—one right on top of the other.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

Notorious artist squat renovated into legal studios.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

At this airport "microcinema," you can catch a film before you catch a flight.