The University of Glasgow featured in Outlander episode 3.05 a number of times. It’s Joseph Black Building, which hosts the School of Chemistry, was used for the classroom scene, including Brianna, when the class is discussing Paul Revere.
We were a little bit lucky to find this room. A friend had told us about the building. However, when we arrived the staff at the university, didn’t seem to know where I should look. Fortunately, having studied at Glasgow University, I had some knowledge of the general layout. Also, the conference room door was wide open. 🙂