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

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

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

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

A cave dug by a man directed by ghosts to find pirate treasure.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

Even Henry David Thoreau found this glacial pothole irresistible.

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

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

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

The headquarters in Salem doubles as an occult art gallery.

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

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

The summer home and later final residence of acclaimed American sculptor Augustus Saint-Gaudens.

This tiny patch of arid sand sits in one of the greenest states in the United States.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

A beautiful Victorian-era cemetery, complete with a miniature village.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

35,000 grape hyacinths flow like water down a garden hill.

No one really knows how these old hobby horses got here, but the herd keeps growing.

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

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