The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

The rusting remains of the largest assembled WWII fleet on the West Coast.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The prototype for all Nazi concentration camps.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

The oldest operating pharmacy in the world features 800-year-old recipes.

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

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Tiki luxury on Nob Hill.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

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

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Home to items never before seen by the public.

The fairy tale castle of the "fairy-tale king."

The largest drain hole in the world.

The fossilized remains of ancient California redwoods.