The Alumni Memorial Union replaced the Brooks Memorial Union, which opened in 1953, because there was a high desirability for a union that would be able to accommodate for the growing and diverse cultural, social, and recreational needs of the facility.The architectural design of the facility was carefully crafted to fit the values of Marquette; more so, the chapel was one of the many designs included in the union. The chapel was built facing West Wisconsin Avenue, so that people who passed by would see a clear symbol of Catholicism.
The facility has three floors. Each floor has its own specific duty in relation to the overall purpose of the union. The first floor is the location to many services used by students, alumni, staff, and visitors. Services there are the office of student development, the spirit shop, Town Bank and many more. The second floor is home to two dining facilities - the Lunda Room and the Marquette Place cafeteria. The third floor consists of the Monaghan Ballroom, a ballroom used for student career fairs and other related student events.
The Weasler Auditorium is a theater with a built-in audio system, dressing rooms, and a stage. The auditorium is used for plays, movie premiers, or even a dance practice. It auditorium seats approximately 500 people.