There are many labs, classrooms, faculty offices, a herbarium, and the "Collections House" greenhouse in the Felmley Hall of Science Annex.
In 1962, the University received a grant from the National Science Foundation to assist with a $1.8 million annex. The Felmley Hall of Science Annex opened in 1964.
The Felmley Hall Annex is located next adjacent to Felmley Hall on the corner of W. College Ave. and S. School St., on the northeast end of the quad.