A Type 7 arrives in Park Street via the oldest Subway in the USA. Unique feature of Park Street on the inbound side is a track right in the middle of the platform you can walk across.
Once upon a time the Aquarium station was very dimly lit. But a rebuild has changed that and it is now one of the best stations for photos. The T now has a headlights on policy another new change.
The newest cars on the "T" built by CRRC creep into North Station which has seen massive changes over the years, once elevated pre 1975 and more recently merged with the Green Line in 2004.