Boylston was originally configured for four tracks with two island platforms, and the original track layout has remained essentially unchanged since then.
The two outer tracks formerly led to the Pleasant Street portal.
A stub of the former outer southbound track is used for work car storage.
The northbound track has been fully removed; a disconnected segment of track holds two former streetcars for display.
The cars (PCC #3295 and Type 5 #5734) were used for fan trips until 1990 and 1998.

The Green Line takes a sharp right-angle turn just south of Boylston station, as it turns from Tremont Street onto Boylston Street.
 The tight radius of curvature of the track frequently causes loud squealing noises to emit from the train wheels, which are audible at street level near the station entrance at the corner.
In 2017, the Green Line added 6 greasing units to the existing 13 in the system; these devices pump grease onto train wheels and the rail as trains pass them.
 Maintenance staff also retrofitted flange stick lubricators on newer trains, which scrape graphite onto the side of the wheel and do not affect braking.
However in 2018, journalism students from adjacent Emerson College measured sound intensities over 110 dBA in the station, as reported in the Boston Herald.
Boylston was originally configured for four tracks with two island platforms, and the original track layout has remained essentially unchanged since then. The two outer tracks formerly led to the Pleasant Street portal. A stub of the former outer southbound track is used for work car storage. The northbound track has been fully removed; a disconnected segment of track holds two former streetcars for display. The cars (PCC #3295 and Type 5 #5734) were used for fan trips until 1990 and 1998.
The Green Line takes a sharp right-angle turn just south of Boylston station, as it turns from Tremont Street onto Boylston Street.  The tight radius of curvature of the track frequently causes loud squealing noises to emit from the train wheels, which are audible at street level near the station entrance at the corner. In 2017, the Green Line added 6 greasing units to the existing 13 in the system; these devices pump grease onto train wheels and the rail as trains pass them.  Maintenance staff also retrofitted flange stick lubricators on newer trains, which scrape graphite onto the side of the wheel and do not affect braking. However in 2018, journalism students from adjacent Emerson College measured sound intensities over 110 dBA in the station, as reported in the Boston Herald.
Boylston station