I've sure most of you are familiar with this carved stone on Columbus Avenue next to some of the Back Bay headhouses:
The stone was part of the second Back Bay station, built in 1929 and demolished in 1979. When constructing the modern station in the 1980s, the decision was made to reuse the stone as a connection with history.
What isn't as well-known is that other pieces of the old station were also reused. I've managed to identity some of them, and I would welcome knowledge of any more.
There's this locomotive carving, which used to be on the west face of the station
and is now on the ventilation stack:
There's this carving on the end of St. Charles Street, and a similar one on Cazenove Street, which can also be seen in the 1979 photo I linked above.
And there are several reused metal canopies