Parks | The High Line, New York, NY

Extras

• Modern Marvels | Transcontinental Railroad

  The railroad that shrank the time it took to cross the nation from six months to one week.

• Modern Marvels | Erie Canal Albany, NY to Buffalo, NY

  Waterway that linked the Atlantic Ocean with the fertile farmland of America's interior.

• Modern Marvels | John A. Roebling Bridge

  John Roebling first revealed his bridge building secrets in Cincinnati.

• Modern Marvels | Eads Bridge

  James Eads created the first steel bridge, ushering in a new steel age for building.

• Modern Marvels | Colorado River Aqueduct

  Provides much of the drinking water for southern California.

• Monuments | Statue of Liberty, New York, NY

  Conceived by Frenchman Edouard Laboulaye as a celebration of America's democracy.

• Streets | St. Charles Avenue, New Orleans, LA

  Ride the streetcar that helped launch a wave of suburban development across the nation.

• Streets | Boston Post Road

  Travel the highway that helped win the American Revolution.

• Streets | Eastern Parkway, New York, NY

  America's first "parkway," designed as a tree-lined oasis for city dwellers.

• Streets | National Road, Cumberland, MD to Vandalia, IL

  The first road ever paid for by the federal government, which paved the way for settlers.