"Home to MBTA, America's first subway system and dubbed "The Walking City" Boston is a pedestrian's perfect city. Bostonites can catch a Red Sox game at Fenway Park, or visit Boston Common, the oldest public park in the US.The powerhouse investment firm, Fidelity Investments, solidified Boston's spot in the Top 30 Most Economically Powerful Cities in the World. Healthcare professionals often relocate to Boston to work at Brigham and Women's Hospital." 
Walkscore.com