08/11/2025
Happy 100 years Michigan Medicine. We are proud to be part of this team!
100 years ago today, we took the final steps of opening the nation's largest university hospital, at the corner of Ann and Observatory Streets.
This aerial image taken a few years later shows the hospital that came to be known as "Old Main" - after it was expanded upward by another two floors.
The hospital had 700 beds, 13 operating rooms and amphitheaters, outpatient clinics, a huge X-ray facility, clinical laboratories and much more. Designed by the firm of celebrity architect Albert Kahn, it was funded mainly by the state of Michigan. Two other buildings also housed inpatients, making U-M the 11th largest hospital complex in the country at the time.
Across the street, the dormitory for nursing students, Couzens Hall, opened just after the hospital. Named for the U.S. senator whose gift made it possible, it housed more than 250 students and classrooms for the Training School for Nurses, the forerunner of today's University of Michigan School of Nursing
Next door to it is the Detroit Observatory, built in 1854 as U-M's astronomy outpost on what was once the edge of town. Across from the Observatory stands the Simpson Memorial Institute, which opened in 1927 for clinical research on blood disorders.
Also this month in 1925, our University of Michigan Medical School opened its newest research and teaching building, then called East Medical but now used by U-M earth scientists and called the 1100 North University Building. The Medical School's research and teaching had begun on the Diag in October of 1850.
Learn more about "Old Main" hospital: https://michmed.org/RB88r
Do you remember this hospital as a patient, staff member, or alumnus? Share your memories here: michmed.org/memories
Explore all 175 years of U-M medical history here: https://medumi.ch/175th
Image: Bentley Historical Library