Boston PCC underground in Boston, Massachusetts? At the Boylston Station, there are 4 tracks, but only 2 active. The 2 inactive tracks are part of the Pleasant Street Incline, the southern access point for the Tremont Street Subway. MBTA 3295 (PCC, Pullman Standard 1951) and 5734 (Type 5, JG Brill 1924) are displayed on this track. The station was designated a National Historic Landmark in 1964 as part of the first underground rapid transit in the United States.