Pennsylvania's own Roswell-style UFO mystery.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

A quirky collection of outsider art made from automobile parts.

Buffalo's abandoned concrete grain elevators are getting a second life.

Toxic waste disaster that founded the Superfund program.

A forsaken wonder in the middle of the East Side neighborhood.

This natural sea cave hides a small wonderland of natural turquoise beauty.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A collection of human remains, animal body parts, and other macabre curiosities all legally for sale.

The remains of a once-famous hotel that also acted as an artist colony.

305 homemade stone stairs wind their way up the Hamilton escarpment.

An abandoned skate park located in the middle of the wilderness.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

The first outlet of Canada's biggest fast-food franchise has been slinging doughnuts since 1964.

The third version of this tall sailing ship sits, rusted and burnt, in Lake Ontario.

Abandoned for over a century, this chilling train tunnel is now a destination for ghost hunters.

Legend says that this short Canadian tunnel still holds the dying screams of a girl who burned alive.

This public space is speckled with the eerie remnants of a defunct amusement park.

These hooded graves are the only of their kind in the United States.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

This Old Testament garden features 100 plants from biblical times.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.