Unrepaired walls from a 1920 anarchist bomb attack.

Years of archaeology, just chillin' by the water cooler.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

A museum and shop on Bourbon Street located in the French Quarter.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The second oldest continuously operating bar in Louisiana.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A terrific purveyor of natural history objects and curios.

Tucked in the back of this amazing antique store is an important piece of medical history.

Elevated freight railway turned wildly successful urban park.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A dilapidated dock tells the story of Titanic’s missed arrival.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

An accidentally hidden library containing the ephemeral history of New York.

A friendly pub with a sordid past in cock fighting.

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

Macabre astrological automaton clock dating to the late 1400s.

The first museum in the world devoted to sexual gadgetry.

Two stunning 17th-century libraries and a cabinet of curiosities.