High Quality Content by WIKIPEDIA articles! Waller Hall is the oldest building on the campus of Willamette University in Salem, Oregon, United States. Built in 1867 as University Hall, the five-story, red-brick structure was added to the National Register of Historic Places in 1975. The building has been gutted twice by fires with the interior rebuilt each time, and went through renovations in 1987 to 1989 and again in 2005.