A monument marks where a convent was burned by an anti-Catholic mob in 1834.

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

Once the largest public hospital for the mentally ill was also surrounded by controversy.

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

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

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

The gravestones in this historic cemetery are carved with mysterious faces.

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.

Around 100 sculptures from artists all over the world decorate the hiking trails surrounding this locale.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

A serene plaza that commemorates one of the Granite State's most iconic figures.

All that remains of this Massachusetts town, demolished in the name of progress, is a stone marker.

This beautiful Cape Cod beach offers dazzling views and an interesting historical footnote.

This Massachusetts home was the first to have a telephone line and its own phone number: 1.

Final resting place of the author who wrote the ghost story "The Turn of the Screw," and his brother, the Harvard doctor and paranormal investigator.

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

Colorful clay cliffs tower over an unofficial nudist beach on Martha's Vineyard.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

Massachusetts memorial to murder victim Elizabeth Short near the spot where she was born.

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

The Mysterious Witch Bonney, a haunted statue in an old industrial city.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

A spring-fed pool so deep it's used for scuba diving as well as swimming.