Albertus Hall provides both classrooms and lab space for Aquinas science students. The first floor of Albertus houses physics, pre-engineering and geography classrooms, a cartography lab, and a modern lecture hall that seats 90 students. The second floor is reserved for the chemistry department's labs and student/faculty research area. The biology department resides on the third floor, complete with labs and a greenhouse. On the top of the building is the Baldwin Observatory. The telescope is open to the community for daytime and evening viewing.