The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

First LEED-certified gas station in the United States.

World War II-era Nazi compound nestled in the Santa Monica hills.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

A three-story, three-dimensional hobo clown in a tutu welcomes CVS shoppers.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

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

Remains of a Greek freighter trapped off of Rocky Point in 1961.

A ghost town at the airport is now a refuge for blue butterflies.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Made famous by cable TV, this oddball collection of antiques and collectibles is a cut above the rest.

Home to Hollywood history and a very special salt crystal.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Home of Howard Hughes' Spruce Goose.

A Prada store in the West Texas desert that is never open for business.

America's only nuclear missile silo open to the public.

This massive geographical sculpture is so subtle, it's possible to pass by it without noticing.

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

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.