Mountain where Jesus was first tempted by the Devil.

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

This cemetery features modernist statues as strange as its name.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

Suburban observatory was personal lab of the father of modern astrophysics.

This former stomping grounds of the most eminent astronomers of the early 20th century.

This midcentury LA bar was the birthplace of tiki culture.

Fans of the spicy bright-red sauce can tour where it's made.

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

The last Americana on Route 66.

This monster board rode a monster wave to break two world records.

Museum dedicated to the preservation of surf culture.

In the days before HD projectors and IMAX, some of the most powerful projectors belonged to planetariums.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

Megachurch turned Catholic church comprised of 10,000 glass panes.

Oldest building in California still in use.

This enormous World War II relic is one of the largest wooden structures in the world.

This mysterious petroglyph evokes the ancient swastika symbol but was later vandalized with the more troublesome Nazi one.

A museum dedicated to restoring vintage aircraft, located at a working airport.