Built to be connected to Berri-UQAM metro and to the UQAM university, it offers many services. It is, like it's name states, "The Great Library", home to thousands of books, knowledge and also to cultural and artistic events. Open for all, its services also take care of the young children. Pretty nice if you want to study.
Here is the soundwalk (with a bit of electronic) I made for this part of town. enjoy! :)