A temple to modernity, tucked away amid Barcelona's more well known museums.

A beautiful but toxic fountain of mercury.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A competition inspired by Stephen King's psychological horror novel "The Long Walk."

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

The Flatiron Building's storied West Coast cousin is a lot more into religion.

Towering basalt columns, a creation of fire and ice.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

Factory that once supported an entire company town of 350.

It's not your typical library, memorial, or book store.

A house built from trash known as the poor man's Hearst Castle.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Hundreds of trees made from glass bottles make up this forest on Route 66.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Rare collectibles from automated musical instruments to 250 unique automobiles.

The famous animator's private station house and man-cave was the birthplace of imagineering.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

From pre-war whiskey cocktails to prohibition-era speakeasy secrecy, this bar has seen it all.

Most famous work of one of Frank Lloyd Wright's sons.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

A museum, art project, and institution that demands we look at the world around us in a strange new way.