An art supply shop holds the secrets of this quiet neighborhood's raucous Barbary Coast past.

A 300-ship graveyard, with a few still visible at low tide.

For over 100 years, this Indiana town has had a tree growing out the top of the local courthouse.

This odd museum/art gallery embraces the physiological, zoological, and ethnographic side of sex.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

The California capital city once stood 10 feet lower than it does today.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

An enormous artwork that colorfully celebrates over 150 years of US military achievements.

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

This abandoned fishing settlement may well be the greenest village in the world.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

There is one corporation registered for every three square feet of space in this inconspicuous office building.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

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

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

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

The island where one woman reigned as a "queen" over 30-odd Japanese soldiers who refused to believe that WWII had ended.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

The pits used to load the nuclear bombs onto the aircraft that dropped them over Hiroshima and Nagasaki at the end of World War II.

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

A magical work of architecture where a wind turbine enables monks to levitate.

A small Montana town commemorates the dog who waited at the train station every day for his owner to return.

A stranded woman lived alone on this remote island for 18 years, inspiring the great children's novel "Island of the Blue Dolphins."