Completed: 1967; 1989 addition Architect: Weaver and Drover; Sasaki Associates (addition) Current Use: university central library Prominently situated in a central location on campus, Hayden (named for Charles Trumbull Hayden, the founder of modern-day Tempe, who was instrumental in persuading the Territorial legislature to locate the normal school in the community) is the university’s central library. The original 5-story tower was expressed in the modernist pavilion style, surrounded by a dry moat sculpture garden and reading area. The addition was placed beneath the campus quad, west of the original structure. A “lantern” admits light to, and at night, emits light from the lobby beneath. Access is gained though an open-air courtyard.