This famous Nevada gold mine, once a hotbed of Wild West shenanigans, is now open for tours.

Historic home to one of the most famous women pioneers of the 19th century.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

This cave was hidden for thousands of years, storing the worldly goods of ancient Native Americans.

Eclectic collection of dark and macabre antiques.

Established in 1853, this crumbling cemetery sits forgotten on the corner of Church and Chapel in Gold Country.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Playable, historic pinball machines fill this Alameda museum.

Once the gateway to the utopian dream-village of a Civil War embalmer.

A rough granite monument marks the spot where Europeans first caught sight of the San Francisco Bay.

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.

A gallery specifically dedicated to the botanical illustrations of a remarkable traveling lady.

One of the largest sculpture collections in the U.K. features history's greats, from Bob Dylan to Galileo, in bronze.

A hands-off space for graffiti artists to hone and display their skills.

Hidden beneath the streets of London is a secret subway that only carried mail.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

Every last book in this bookstore is signed by the author.

A humid oasis combines recreation with exploration in a unique underwater cavern.

This historic California cemetery holds the bodies of veterans of both the Civil War and the Donner Party.

Limestone caves with spectacular showcase chambers.

Ancient human, animal, and geometric figures drawn in the earth.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A reproduction of earth's many biomes.