Massachusetts Bay Transportation Authority
Today, the Blue Line runs from Revere and East Boston to a small part of downtown Boston.  It stops at Wonderland, which used to be a greyhound racing track; Suffolk Downs, which still is a horse racing track; Revere Beach; Logan Airport; Government Center, where Boston City Hall is located; and the New England Aquarium.  Free shuttle buses take travelers from the Airport MBTA Station to the terminals in the airport.