The preserved house of a jazz legend still echoes with his music.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

This kitsch eatery is chock-a-block with bric-a-brac.

The world's longest known cave system.

The famous author's cottage hideaway.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Wine bottle sculpture with a ship's stateroom inside.

Lie in a hammock where George Washington stood.

One of only two commuter aerial tramways in the United States.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Surrounded by low rise buildings and partially converted into an auto body shop, this marble archway is the only vestige of a forgotten Manhattan estate.

A Manhattan Episcopal church with an eerie underground crypt.

The greatest real estate coup of all time.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

A crumbling hospital from the 1850s on Roosevelt Island.

New York City's smallest piece of private property.

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This replica of the Greek structure is in the heart of Nashville.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

This structure among the trees was the result of divine inspiration.