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

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

The world's second-longest burning light bulb.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

The former home of the hard partying literary power couple is now one of the only museums devoted to their story.

This New York holdover was built to provide housing for shopgirls and still does not allow men above the lobby.