This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

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

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

New York City's smallest piece of private property.

A beautiful geyser under environmental threat.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Elevated freight railway turned wildly successful urban park.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The first declared National Monument in the United States.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Two stunning 17th-century libraries and a cabinet of curiosities.

Mysterious rocks that ring musically when struck.

This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

Twenty churches beautifully painted by 19th-century Czech and German immigrants in Texas.

Where the oil industry began.