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.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

The historic building's ornate stained glass fixture has survived the devastating 1906 earthquake, ensuing fires, and multiple redevelopment attempts.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

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.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

One time home to turn of the century explosives, now hidden under the Bay Bridge.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

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

One of the world's tallest statues is also one of its most hated.

Dozens of padlock-trees along the Moscow River.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Former headquarters of the KGB.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

A piece of crumbling highway infrastructure was repurposed as a high-tech facility for testing racecars.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.