A mysterious, abandoned building rotting on the Brooklyn waterfront.

This small, hidden cove is home to abandoned boats.

A retired subway car stands alone in a field in the middle of Queens.

An abandoned tuberculosis hospital moulders on into an uncertain future.

The final resting place of some of Staten Island's earliest settlers and their descendants.

A crumbling hospital from the 1850s on Roosevelt Island.

These mouldering mansion ruins remember a time when the Catskills were nothing but luxury.

A long abandoned hospital building on the outskirts of NYC.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

Small island science organization offers public the chance to participate in research.

A Medieval Water Tower in the Heart of Massachusetts.

A historic custom house with ties to George Washington is now a shrine to local nautical history.

A disastrous shipwreck and a tragic love story.

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

The nation's second-ever First Lady urged the founding fathers to "remember the ladies."

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

This wooly sculpture supposedly marks the birthplace of a famous nursery rhyme, or not.

This old mill and former police station now present a world-class collection of Orthodox iconography.

Surrounded by lonely toys, this Massachusetts gravestone marks the final resting place of six children who were murdered by poverty.

A rock outcropping left by a glacier that made itself useful throughout the centuries.

Monument on the spot where in 1778, Bathsheba Spooner had her husband Joshua killed and dumped down his own well.

This Cape Cod museum exhibits what it claims is the only authenticated pirate treasure in the world.

This historic cemetery is filled with markers that look more like candy than was likely intended.