An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

A ghost town that held steady longer than most, but finally gave up the ghost.

These crumbling Latvian forts make for some haunting seaside ruins.

Wars fought and wars won are remembered by these abandoned bunker ruins.

These stairs were built to accommodate royals mounted on elephants.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

Manchester's abandoned train depot lingers in a post-industrial purgatory.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

One man's grief over the national tragedy has manifested in a pod of homemade whales on his front lawn.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

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

A crumbling Beaux Arts monument to the Bay Area's age of rail.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A store that sells all manner of bones, insects, and animal curiosities.

A ruined hotel with an unlucky history and an eerie present.

A strange house built only at night, with rumored mystic inspiration.

Spiral labyrinth hidden in the hills above Oakland, CA.

A 140-year-old castle with underground caves hidden in San Francisco.

San Francisco Bay's ghost town.

Canyon walls shrouded in ferns.

The ruins of the castle that chemicals built.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

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