The Copley Square district of Boston is one of the most sophisticated areas of the city with fashion shops, gourmet restaurants, art galleries and the Boston Public Library. | Credit: Ian Britton/freefoto.com

Park Street Church, with its 217-foot steeple, is located at the corner of Park and Tremont Streets. Built in 1809, Henry James called the church the most impressive mass of brick and mortar in America. | Credit: Ian Britton/freefoto.com

Duck tour buses make the rounds in Boston, Mass. | Credit: Ian Britton/freefoto.com

Duck tours in Boston | Credit: Ian Britton/freefoto.com

The first subway line in America was built under the Boston Common. It is now part of the Green Line of the Massachusetts Bay Tranportation Authority (MBTA), commonly known as the T. | Credit: Ian Britton/freefoto.com

The Boston Public Garden is the nation's oldest botanical garden, begun in 1859. Featuring elegant Victorian flower beds, weeping willows and a lake where swan-shaped boats drift lazily in the summer. | Credit: Ian Britton/freefoto.com