The final resting place of a space program monolith, soon to be unveiled again to the public.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

A stellar example of Art & Crafts architecture, and a movie set to boot.

A Masterpiece with a Tragic History.

Where the rich wintered in Pasadena.

Two groundbreaking brothers from Pasadena.

A landmark for a trailblazer for female architects and the designer of one of the most famous and opulent buildings in California.

One of Hollywood’s favorite government buildings.

Colorado Boulevard’s historic bookstore, operating since the bustling city of Pasadena was merely some orange groves and a few ostrich farms.

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

A Cold War site complete with rusty structures, hiking trails, and beautiful views.

The show's fictional Korean medical camp was created in the Santa Monica hills.

An Old West film set seen in countless TV shows and movies is open for the public to explore.

Discarded animal sculptures stand forgotten by an abandoned aquarium and water park in Bosque de Chapultepec.

The only castle in North America to ever house European sovereigns.

An inconspicuous footbridge beloved by San Diego locals.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Gold Rush-era tombstones line the park's paths.

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

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

A historic fort commemorating the United States' naval history.

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

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Traversing these canyons, visitors can take in stunning views and glimpses of the region's history.