This restored 18th-century house was once the home of Lititz's first tobacconist.

Among the may artifacts on display is a clock made of 50,000 individual pieces of wood.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

A historic covered bridge is but one example of an oddly prevalent American urban legend.

A unusual sanctuary for abused and exotic animals in South Jersey.

Inside Crosswicks Creek Park resides an estate chronicling 200 years of history.

Mysterious rocks that ring musically when struck.

The world’s first penitentiary, meant to be humane, drove men insane.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

The first American department store, and home to the largest operating musical instrument in the world.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

This elaborate towering structure was once famed for its revolutionary height.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

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

A celebration of capitalism in Midtown.

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

A well-worn marker in a forgotten alleyway is all that remains of what had been one of Manhattan's most beautiful buildings.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.