The ISU Arch was the entry to the first building on the ISU campus, known as the Academy of Idaho in 1902. The original building was expanded by a wing on the west end in 1905 and another on the east end in 1910.
During early decades of the 20th century, the campus front was on Carter Street and the entrance of the Academy faced 7th Avenue, where it meets Carter on the north side of the current lower campus.