This mouldering abandoned mental hospital was once a center for progressive healing.

This abandoned subway station can still be seen on regular commuter trips.

This once bustling boomtown hotel is now the hottest spot in Nevada for ghost hunters.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

This abandoned factory on the Hudson River once churned out a million bricks a week.

The haunting remains of a failed housing development can still be found behind the big box stores that were to anchor them.

Once a place of peaceful repose, this sanitarium now faces an uncertain future.

Once a popular hangout spot this huge mall was left to ruin after economic crash.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

In the heart of Brigham Young's promised land sits a festering plot of industrial ruin that has been claimed by society's outcasts.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

A former connection to City Island, it has been abandoned since the 1930s.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

No one really knows how these old hobby horses got here, but the herd keeps growing.

This railroad tunnel was once the longest in Massachusetts.

An abandoned 1920s-era stretch of cabins now overshadowed by the 66 Motel.

An abandoned asylum where patients have been forgotten but their possessions remain.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

This abandoned caretaker's apartment is one of 13 left in the New York Public Library system.

A short hike into the mountainside forest reveals a decaying 1890s town.

An abandoned 1920s school with a mysterious history.

Rotting dome home spotted near Chapel Hill, North Carolina.

Jacksonville's highways rendered this century-old grammar school unusable.