The world's largest grapevine has produced a delicious harvest at Hampton Court Palace for almost 250 years.

The former Naval shipyard is open for exploring - mostly.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

Internationally-recognized arts center housed in a century-old former military barracks.

A living time capsule of the 1960s Richardson Bay water-front.

Concrete strongholds stand guard over the Golden Gate.

Wheels of chrome by the thousands adorn this California Historical Landmark.

A veteran Disney animator turned his gift for storytelling to a museum devoted to his love of a California city.

Four miles of pipelines form the model of still-functioning retro-tech efficiency.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

California's own majestic geyser is powered by a subterranean volcano.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

This blowhole is supposedly caused by a trapped monster.

This former luxury resort in Kaua'i is now an abandoned relic.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

Hindu temple of the dead home to hundreds of long-tailed macaques.

Home of the world's largest crocodile.

A safari-themed castle in the South African bush with the largest maze in the southern hemisphere.