The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

A strange mark in the stone fence of a cemetery fabled to have been made by the Devil himself.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

It was once the base for a series of domestic terror attacks.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

An enormous cat made of recycled wood scraps.

How did the right arm of a 13th-century English bishop wind up in a Connecticut church?

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

Who is this marble man, perpetually creeping up the steps of his own mausoleum?

The oldest place in Hartford is a cemetery with thousands of bodies stacked beneath the grass.

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.

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

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

The 92-foot-tall structure is based on the aircraft that carried the first Americans into space.

Carved, egg-shaped stone with no explanation.

A Medieval Water Tower in the Heart of Massachusetts.

A stone memorial erected for New Hampshire's only convicted witch.

Welcome sign announcing Haverhill, MA, as the birthplace of horror rocker/artist/director Rob Zombie.

This railroad tunnel was once the longest in Massachusetts.

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

According to legend, Bob Dylan sneaks in twice a year to eat dinner with Jack.

This giant Boston statue of Mary is standing on a globe to show her power over the universe.