The ISU Bengals play home games in Holt Arena. Completed in September 1970, Holt Arena is the oldest enclosed stadium on a college campus in the United States and the second-oldest overall.Only the Houston Astrodome, completed in 1965, predates it.
The indoor arena was conceived by ISU athletic director Milton Holt in 1966. ISU students voted to appropriate not more than $2.8 million to the project two years later. Originally named the ASISU MiniDome, it replaced the outdoor "Spud Bowl" (now Davis Field) as the Bengals' home football stadium; it was renamed in 1988 to honor Holt.