The main chemistry building at UBC, built in 1923 and renovated in 2008. Houses the Chemistry Department offices and limited lab space.
The building where Walter has his lab at Harvard (second season onward).
Lacy tackles a fellow student outside the school to ask him how to get to Geminon in episode #103 "Reins of Waterfall".
In S01E14, Dr. Rush teaches a class in this building, and then is seen outside of it talking to Dr. Daniel Jackson.