Boston's Red Line Train

I've never been to Boston's Red Line Train.

While visiting Boston, we used the "T" quite a bit. We commuted in everyday and would use the T to get around when we felt it a bit too far to walk. There are four T lines, Red, Orange, Green and Blue. My daughter pointed out that we used all except the Red Line. I guess that just means we have to go back some day to see the things we missed out on and to ride the Red Line!

That I'd like to see.