A winding path built in secret on the edge of the continent.

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

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

An abandoned 146-acre summer resort slowly being reclaimed by nature.

Forgotten under the construction of a new urban roadway is a small, abandoned part of town.

The remnants of a 19th-century ironmaking complex hidden in the woods of Connecticut.

Inside a state forest, the forgotten remains of a Cold War defensive installation.

The cave where two British judges hid in exile after sentencing the king to death.

A few stone foundations and an old graveyard are all that is left of this once thriving settlement in the wilds of Connecticut.

An abandoned Depression-era zoo hidden just off the highway.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

The oldest living tree in Manhattan comes shrouded in sinister legend.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

Long the exclusive domain of birds and vagabonds, this little-known Central Park peninsula is open to the public once more.

A once grand hotel is being retaken by the wilderness it once capitalized on.

A natural gas leak provides a flickering flame beneath a waterfall.