A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

A beautiful memorial tells the story of a formerly enslaved woman whose kindness shaped a burgeoning city.

One incredible room in the Santa Barbara Courthouse is covered in wall-to-wall canvas murals.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A beloved carnival gets a modern makeover in Los Angeles.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The alley connecting two of country music’s most historic venues has a rich history of its own.

One Confederate statue that accurately reflects the ugliness of its subject.

The final resting place of the poets Shelley and Keats.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

An underground magnet for ever-changing street art.

The miraculous hydrant that saved the Mission District in 1906.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Marta Becket's hand-painted theater in the desert.

Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.

The mysterious large white cross visible from the runway is a memorial to a massacre during Spanish Civil War.

A lush indoor jungle fills this bustling Madrid transportation hub.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.