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

A castle inspired by medieval architecture is hidden in the woods of Connecticut.

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

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

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

A Tibetan Temple and Buddhist organization just off the beaten path in Northern California.

A lighthouse built to save lives that took quite a few with its treacherous location.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

As state high-points-by-elevation go this spot is one of the lowest, but for years it was also the hardest to climb.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

All that remains of the Whittall mansion are the ruins of the formal garden and its pergola, dedicated to the late Matthew J. Whittall by his widow.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

America's oldest archaeological site or a muddled case of wishful thinking.

A historic bridge with a lovely acoustic anomaly.

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

Funded entirely by volunteers and donors this military memorial features a tank with a comedy line on its barrel.

A mysterious echo seems to defy the laws of acoustics.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.