A popular 19th-century natural landmark is now hidden within a sprawling forest.

Known as one of the most climbed mountains in the world, this barren peak is permanently bald thanks to an anti-wolf fire.

University of New Hampshire holds the documentation and artifacts of local alien abductees.

A stone memorial erected for New Hampshire's only convicted witch.

The ghost town that was one of New Hampshire's first settlements now exists as a park detailing its history.

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.

Ruins of a historic medical facility sits eerily by the water.

A former copper mine which became a truly unsuccessful prison.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

The kind of mixed-up place that drives archaeologists crazy.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

If a visit to this farmhouse feels as if you are stepping into an artistic masterpiece, you’d be right.

This candy-striped tower is the farthest east you can go in the United States.

The second-oldest garden cemetery in the U.S. was also a college brainstorm spot of Stephen King.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

A century after his death, this covered bridge still calls to mind the plein air painter who loved it.

This uninhabited island in Maine is home to various works of art left by visitors over the years.