I had a tremendously positive experience conducting research at the Walter P. Reuther Library at Wayne State University this past Thursday.
Detroit has some tremendous educational and cultural resources, especially in/around the Wayne State campus. Not only is the glorious Detroit Institute of the Arts located there, but so is the Detroit Public Library Main Branch (built in the 1860s), the Detroit Historical Society & Museum, the Michigan Science Center, the Charles H. Wright Museum of African American History, and the libraries of Wayne State University.
This is a tremendous resource that is actually easier to get to (from London) than the museums of downtown Toronto (quicker & with better parking). I don’t know how many people know of these institutions, but I would suggest checking them out. The atmosphere around the university campus is lovely and there is good eating, too.