Dedicated to "the father of U.S. life insurance."

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

This building is more than 250 years old and was built in one of the first towns settled in Massachusetts.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

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

An eccentric inventor's castle home with its own indoor weather system.

These beautiful garden buildings are among the oldest surviving greenhouses in the United States.

An artifact taken from one of America's shortest wars.

A historic bridge with a lovely acoustic anomaly.

An elaborate, hidden model train in the Needham Town Forest.

This castle constructed in 1928 was crafted from drawings of Lismore Castle in Ireland.

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

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

The phrase "the shot heard around the world" was coined after a skirmish at this bridge.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

A historic bridge no one is allowed to cross.

The notorious pirate William Kidd might have buried his treasure around this local pond.

Small caves once used as a hiding place for some of those accused during the Salem Witch Trials.

An abandoned water sports stadium that has become a haven for graffiti and decay.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.