Orange Line
Downtown Crossing northbound
Looking south through the tunnel you can see the southbound platform, which is entirely offset from the northbound side due to the narrowness of Washington Street, under which the subway runs. This was all built as cut-and-cover, as was common in 1911, and consequently there is no mezzanine.
Haymarket station fare array
The Green and Orange Lines run parallel between Haymarket and North Station, but the connection is so inconvenient that Green Line passengers are better off using surface streets to enter the Green Line station directly. The Orange Line station is located below the Haymarket Center, a combination tunnel ventilation building, state office building, parking structure, and public market hall.
Forest Hills station
The main, original, south headhouse is located across Arborway, a busy highway that you probably wouldn't want to cross if you didn't have to. There used to be an overpass here, blocking the view; the pedestrian tunnel to the north headhouse was built ad s part of the street reconstruction that also demolished the overpass.
Arborway bus garage
Looking up Washington St. towards the Arborway bus garage, which is located on the former site of the Arborway carhouse, where various streetcar routes in Jamaica Plain, Roxbury, and Dorchester once terminated. Before the Southwest Corridor project, the Washington St. Elevated ran past the carhouse to its own terminus and streetcar interchange station, east of the current station.
Forest Hills station
Looking across the Arborway at the new north headhouse, where the huge Casey Overpass used to be. Where I'm standing was originally built with a trolley loop for the Green Line E branch, but the E Line was "temporarily" suspended through Jamaica Plain when the Southwest Corridor opened and never resumed. In the late 1990s the remainder of the embedded track was removed during street repaving, but the trolley loop remained and was used by the 39 bus.