For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This postmodern apartment block was designed to be a vertical neighborhood.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

A controversial art piece that harkens back to local folklore.

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

This California tree is the single source of the state's entire orange industry.

The so-called "Bridge of Thighs" in Palm Springs allows nudists to discreetly cross the road.

Experience the glam side of air travel without leaving the ground at this speakeasy.

Colorful Native American paintings are hidden within this small cavern.

California's largest steel arch bridge.

Hidden in the Santa Ynez Mountains off Highway 154, this tiny restaurant once served as a stagecoach stop.

Rusty industrial city full of oxidized distillation towers.

The helicopter that "Tricky Dick" absconded from the White House in on his last day in office.

Try the frozen treat that inspired Arrested Development's famous banana stand.

This 75-year-old Shakespearean sculpture is painted by a local artist for every season.

Someone really, really wanted to save this fast-food icon from demolition.

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

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

Sojourn to the past at this residence teeming with 1950s memorabilia.

A large sculptural artwork and garden in Escondido, California.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

The Yiddish language stages a renaissance in a shtetl-inspired cultural center on the San Diego coast.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

This little blue house pokes out over the campus of UC San Diego, seven stories high.