Beneath a Virginia City bar is the entrance to an abandoned gold mine.

An eccentric millionaire's personal curio collection includes at least one shrunken head.

These once-beautiful historic graveyards are set against the barren Virginia City hills.

Curiously, this large sporting goods store features 14 wax representations of American presidents.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

One of the largest fleets of armored vehicles in the world, sitting out in the California desert.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A luxury hotel housed in a former 15th century Gothic church.

The site of a classic series of Laurel and Hardy pratfalls.

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

An artsy hidden staircase leads to breathtaking views of San Francisco.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

This 11th century tower is said to be the oldest building in Oxford.

The granddaddy of English geoglyphs dates back to the late Bronze Age.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

WWII-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers. .

The historic home still shows the scars from a little run-in with the British in 1813.

The petroleum industry brings you the joys of hydrocarbons and largest collection of antique oil rigs in the world.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

Remembering the Alamo with a full-scale replica of the 1836 city.

A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.