The original building of the institute was a three-story frame structure first occupied in 1844. At the time, it was one of the largest structures in the Pacific Northwest. It housed the first session of the state legislature to meet in Salem after the capital was moved there in 1851. The building burned down in 1877. In 1867, a new brick building was finished to house the school and named University Hall. The building was renamed as Waller Hall in 1912 to honor the Reverend Alvin F. Waller, and is now the oldest university building west of the Mississippi River still in use. The first president was Francis S. Hoyt, who served in that position from 1853 until 1860 and was replaced by Thomas Milton Gatch who is the only president of the school to serve as president two different times.