A former major munitions plant that has been converted into a sprawling art space.

An original apothecary from 1792.

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The steel hull of a wrecked tug rests on Lobster Cove on Monhegan Island’s rocky southeastern shore.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Rock face that shares a name with Mary Shelley's famous doctor.

A short nature trail winds through the greatest works of poet Robert Frost.

Even Henry David Thoreau found this glacial pothole irresistible.

A former zoo turned public park, where visitors can hang out in the old animal cages.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

Monsters and miniatures are held in equal esteem at this wondrous museum.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Hundreds of hidden passageways weave through the old quarters of Lyon.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

Millions of numbers carved in glass represent the tattoos forced upon victims.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

Three acres of mythology-inspired sculptures are visible from the highway.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

One of the largest Marian shrines on the West Coast stands rather unexpectedly in Silicon Valley.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.