Historic home of America's sweetheart sharpshooter, Annie Oakley.

The elevator hidden in a smokestack on Roosevelt's yacht now serves as a monument to the former president.

This forgotten boat elevator was an engineering marvel in its heyday.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

The first piece of public art dedicated to LGBT rights.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

Where pardoned turkeys once spent their all-too-brief final days.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

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

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

A simple Colonial home with a past haunted by death and madness.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.

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

Connecticut's shot tower is near the end of its life.

Wedged between two sets of row houses is an awkwardly located family graveyard.

A clone of a cloned tree that was so important it allegedly had its own guards.