A letter from Bill Nelson, Executive Director
The 2025–2026 academic year brings exciting changes to the Iowa Memorial Union (IMU). Renowned for its rich history and role as the campus hub for student involvement, the IMU is evolving to better serve both current and future students.
An $81.4 million renovation, backed by robust student support, is underway to create a centrally located well-being center offering mental and physical health services, wellness programs, and student care supports and resources. The project also includes new interior and exterior lounge areas, improved building wayfinding and circulation, renovated dining spaces, and national retail food options.
As we celebrate the IMU’s 100th anniversary, we invite you to share your memories and join us at our celebratory events throughout the year. Stay updated on the renovation and centennial activities by visiting our website or following us on Instagram and Facebook. Whether you’re a student, alum, or friend, we welcome you to stay connected and be part of the IMU’s next chapter.
Bill Nelson
Upcoming centennial events
100th Birthday Bash with CAB
Campus Activities Board (CAB) will host the Iowa Memorial Union’s 100th Birthday Bash on Saturday, Nov. 15, from 6-9 p.m. in the International Ballroom of the IMU. All are welcome to participate in this birthday celebration featuring a nostalgic recreation of the IMU’s former bowling alley, board games, face painting, and refreshments!
Please join us for this celebration of tradition and the rich 100-year history of the IMU.
Registration of a student organization does not imply University of Iowa endorsement of its views, activities, or content. If you require a reasonable accommodation to participate in a student organization activity, please contact siyu-chen@uiowa.edu.
Centennial Scavenger Hunt
Join in the fun and learn more about the 100-year history of the IMU in our centennial scavenger hunt! New missions will be available every month and prizes awarded to the top finishers!
How to participate
- Download the Goosechase iOS or Android app
- Log in. New to Goosechase? Sign up for an account or participate as a guest.
- Search for this experience by code: UR5TD8
- Create a profile with your first and last name in the username. Some profiles require a passcode!
- Lastly, set yourself apart with a name and photo
IMU Centennial Gala
Our celebration culminates with the IMU Centennial Gala on Saturday, Feb. 14, 2026, where we’ll pay tribute to the history of the IMU while commemorating the next chapter.
More information coming soon.
Share your IMU story
What’s your favorite IMU memory? We’re collecting stories from the past 100 years—add yours today.
100 years of the IMU
Construction Starts on IMU
1924Unit 1 construction begins on the IMU and building plans arise from a three-acre barn plot. The first phase of the IMU includes the Main Lounge offices, and a snack bar.
A Campus Union with Purpose
1925The IMU was one of 16 college union buildings in the U.S. in 1925 and assumed the role as a service center on campus, offering Union Dining Service, housing and employment services and the Union Browsing Library.
IMU Expands with Unit II
1927Unit II construction is completed and dedicated. Union activities involve games, dances, UI Band concerts, and homecoming. Additions include a radio broadcast room, soda fountain, and roof deck.
IMU Shifts to Arts and Entertainment
1936During the 1930s, the IMU transitions its focus to entertainment and the arts. The Silver Shadow, a non-alcoholic nightclub, opens within the Union Cafeteria and the Class of 1935 establishes a fund for the Mark Twain room.
IMU Gifted to the University
1942IMU Corporation Board of Trustees gifts the IMU to the University of Iowa. The facility is used by the U.S. Army, during WWII to feed and train cadets.
IMU Expands Student Amenities
1955Unit III construction is completed featuring billiards, bowling, snack bar, student lounges, and music rooms.
A Stage for Student Voices
1964During the 1960s, the IMU serves as a platform for student activism, demonstration, and entertainment. In 1964, the Soapbox Soundoff begins as a stage for political commentary and the Thieves Market holds its first student art exhibition.
A Creative Campus Hub
1970In the 1970s, students and faculty from the art and music departments use the IMU as a creative, collaborative space.
IMU Expansion Adds Key Amenities
1988The 1988 renovation links the 1920s and 1955 additions of the building; adding the Terrace Lobby entrance on Madison street, Student Activities Center, and the University Bookstore.
IMU Closed After 2008 Flood
2008The Iowa Flood of 2008 devastated the UI campus and closed the IMU from June through November. The building required an extensive flood mitigation process.
IMU Recovery Project Complete
2015The IMU Flood Recovery and mitigation project is completed. The ground floor and new IMU River Terrace open to the public.
IMU Empowers Student Programs
2018The IMU remains an incubator for student ideas, programs, and initiatives for all students. In 2018 it became home to the Food Pantry and Collegiate Recovery Program.