University of Arizona Old Main

- Old Main, University of Arizona, originally known as the University of Arizona, School of Agriculture building, was the first building constructed on the University of Arizona campus in Tucson
- Old Main is one of the oldest surviving educational structures in the western United States
- Placed on the National Register of Historic Places in 1972
- Designed by architect James Miller Creighton

- Construction of Old Main began on October 27, 1887

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