the sheer size of this museum is awesome and very large, when you take into account the rail yard and trains that are outside but are fenced off. as a part of the roundhouse for the actual museum part I was extremely disappointed to see the size of the museum from the inside. I came for the go train exhibit and wasn't satisfied with what this location had to offer, a couple of display cases and that's it? little did I know that the other bays were actually in use for refurbishing other trains for either use or display. the biggest let down was the promise that the go train on exhibit would be open at noon and be available for exploring, after 90 minutes of killing time I went to go ask the lady at the desk what was going on and she explained to me that the "noon" time was flexible...not impressed.
this is quite a walk from union station, and the indoor part is not worth the money asking.