Mysterious stone tower featured in many alternative histories of the New World.

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

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

An important Mayan religious and trading center dating back to 200 BC.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Every equinox this Maya pyramid puts on a spooky ancient light show.

One of the smallest towns in the United States.

Roaming bison and a spectacular view at the highest point in Nebraska.

Two thousand artifacts from around the world collected by one woman who loved to travel.

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

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

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

Impossibly life-like natural history models created out of glass by a father and son.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

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

Like stepping into a spooky fairy-tale, this shop carries the dark ideas of artists and other makers.

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

Three prestigious academic collections come together to create a world-class natural history museum.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

The final resting place of New England's last "vampire."

This giant wooden treehouse within a sprawling garden has its own eatery.

The site of the first "historically true" UFO encounter in the U.S.