This private residence was the template for one of the most beloved television homes of all time.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

One of Ireland's most infamous prisons for rebels including men, women and children.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

Historic funicular railway, believed to be the shortest railroad in the world.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

The quirky salon doubles as a retro museum run by the world's leading "hairstorian."

This conservation area is also home to many of the region's desert tortoises.

An old California photo stand has been turned into a shrine to the cozy art of crochet.

After serving in World War II and picking up Apollo astronauts, this aircraft carrier has been turned into a museum overlooking the San Francisco Bay.

The unusual burial monument of Arizona's first governor.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The studio and home of one of America’s preeminent mid-century sculptors.

The secret behind these nostalgic light fixtures: They're not as old as they may seem.

A dazzling work by a Pop art legend hangs in one of the world’s busiest subway stations.