This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

This historic Victorian mansion is allegedly so haunted that a signed waiver is required to enter.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

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.

The only surviving building of historic West Boylston, which was flooded to create the Wachusett Reservoir.

A beautiful, creepy 19th-century castle stands incongruously in rural Vermont.

In 1898, a New England storm that claimed more than 400 lives created this brand new stretch of shoreline.

One man’s hobby is another man’s world of metal wonders.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

An eccentric inventor's castle home with its own indoor weather system.

A huge musical instrument played by the ocean.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

Abandoned Coast Artillery fort now serves as a graffiti canvas and sightseeing vantage point.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

At the supposed instruction of Ben Franklin and Socrates, a Spiritualist believer intended to birth a mechanical messiah here.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

An essential stop before plundering, BYO Cutlass.