Built in 1969, the Biological Sciences Building houses the Departments of Biological Sciences and Psychology, as well as the Faculty of Science Administrative Offices. The fortress-like aura of the building is attributable to the head architect's fascination with medieval castles. Students have more stories about this building than any other. There are rumors of shower stalls with electrical outlets, sinks without drains, a classroom with a secret entrance, and a cursed Egyptian mummy more than 2000 years old housed in the basement. Because the building was constructed by many different contractors who had more than a little difficulty getting it all together, these stories may all have been true.

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The Department of Chemistry was first housed in the Collegiate Institute which was located in Strathcona on the south side of the river. It then moved to the north wing of Athabasca Hall, then to the second floor Arts and from there to the west end of the Medical Building. In 1960, the Physical Sciences buildings opened. These buildings were extremely important because they provided chemistry and physics students with lab space to develop their graduate and research programs to an international standard. In 2001, the Faculty of Science renamed its Chemistry Building to Gunning/Lemieux Chemistry Centre, in honour Drs. Harry E. Gunning and the late Raymond U. Lemieux, two individuals whose accomplishments put the Department of Chemistry at the University of Alberta on the international map.

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Athabasca Hall, built in 1911, was the University's first "official" home. For the first year it housed the entire University, including classrooms, labs, the library, faculty offices, the dining room, as well as residences for domestic staff, faculty, and students.

Although the building was given the 1979 Award of Honour for Heritage Preservation, the lobby and lounge which hold some interesting historical displays, are the only rooms which have been preserved in their original style. The majority of the building is now fully-modernized with air-conditioned offices and seminar rooms. Today, Athabasca Hall is home to the Department of Computing Science, along with the Computing Science Centre, which opened in 2001.  

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The Central Academic Building, more commonly known as CAB, was built in 1970 and is a common meeting area for students from all faculties. It houses the Department of Mathematics and Statistical Sciences, which has been in existence since the University’s opening classes in 1908.
 

 
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The Earth Sciences Building (1954) houses the Department of Earth and Atmospheric Sciences. The Department's numerous collections have over 188,00 specimens including the Biostratigraphic Reference Collection upon which the stratigraphy of Western Canada is based. EAS is also home to the University of Alberta Meteorite Collection, which is the second largest meteorite collection in Canada. 

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The Civil-Electrical Engineering Building has recently been upgraded and is now the home of the Department of Physics while the department waits for the construction of Centennial Centre for Interdisciplinary Science (Phase 2). CEB was originally occupied by the Department of Civil Engineering and the Department of Electrical Engineering.