Hynes Convention Center is an underground light rail station on the MBTA Green Line, located at the intersection of Newbury Street and Massachusetts Avenue at the western end of the Back Bay neighborhood of Boston, Massachusetts. It was opened by the Boston Elevated Railway (BERy) in 1914 as a transfer station between east-west streetcars running in the Boylston Street Subway to the Tremont Street Subway, and north-south streetcars on Massachusetts Avenue. The surface cars were replaced by buses in the mid-20th century; Hynes is still a transfer location to the key route 1 bus and two other MBTA bus routes.The subway station is not currently wheelchair accessible, although a renovation to the station is planned around 2019 as part of air rights development over the adjacent Massachusetts Turnpike. Like all MBTA bus stops, the surface-level stop is fully accessible.HistoryOpeningConstruction of the Boylston Street Subway, a westward extension of the 1897-built Tremont Street Subway, began in March 1912. Stations were located to serve Copley Square - a major civic center - and the Massachusetts Avenue thoroughfare. The tunnel including Massachusetts station opened on October 3, 1914.