Visitors are welcome at the OSA. We are happy to show our labs and library to anyone who wishes to visit. Tours We especially invite researchers to make an appointment in order to view and study collections and archival material. Classes are also invited to make a guided tour appointment. All tours can be scheduled for any time of year. Hours Normal hours are 8:00 a.m. to 4:30 p.m., Monday through Friday year-round. Visits at other times are possible by special arrangement. The OSA is closed on University holidays. Location Clinton Street Building at 700 South Clinton St. in Iowa City 10-15 minute walk south of the Old Capitol and Pentacrest (see map). Parking Metered parking is available at the building. Please email the OSA or call (319-384-0732) for further information or to schedule a visit.