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

This tower pays homage to a legendary Viking fort established in Massachusetts that never really existed.

A historic bridge with a lovely acoustic anomaly.

Designed as a place for patients to take in the scenery, this tower has a dark history.

Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

A 12,000-year-old bog boasting rare plants and fauna.

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

A quiet spot commemorating two naturalists who had to choose between love and the university at which they both taught.

This small stone chapel is a hidden gem just outside the University of New Hampshire campus.

3,200-square-foot mural inside Dartmouth Library depicts the history of America with images of human sacrifice, ancient gods, and other unspeakable terrors.

Carved, egg-shaped stone with no explanation.

Site of an escape, ten murders, and some scalpings.

Birthplace of America's first documented serial killer.

Believed by many to be the oldest surviving public monument in the United States.

A very big rock just plopped down in the New England woods.

This young woman's tombstone names her murderer, who is buried in the same cemetery.

A gravestone marks where a man's lost limb was laid to rest.

Murder scene memorialized in perpetuity by grisly obelisk.

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

Centuries-old hoofprints and wagon tracks reveal themselves after a good winter storm.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

Civil War Fort on an island in the Boston Harbor.

The hill that gave the Massachusett tribe, and later the state, its name.