Together, Old Capitol Museum and the Museum of Natural History (next door in Macbride Hall) form the University of Iowa Pentacrest Museums. Old Capitol Museum has been in operation since 1976, when the building reopened after a major renovation. It is the only National Historic Landmark in Iowa City. Throughout its long history, the building has served as a seat of the territorial and state governments, a university building serving numerous schools and colleges, administrative offices, and finally a museum.

From City Guide: Iowa City by Jan Weissmiller:

Built in 1840, the Old Capitol building has been beautifully restored. The first-floor museum often features exhibits related to the Workshop. A gorgeous spiral staircase leads to the original Senate chambers, where literary events are frequently held. Recent events include a retirement celebration for long-time Iowa Review editor David Hamilton and an evening with Pulitzer Prize–winning poet Natasha Trethewey, sponsored by the Derek Project, a nonprofit organization that introduces students from the Iowa City Community Schools to a well-known author.