The University Library ranks as the sixth largest library in the United States and the third largest academic library in the country, with only Harvard and Yale having larger research collections. The library's current collection consists of over 13.6 million items. The Undergraduate Library was constructed entirely underground just east of the main library, connected by an underground tunnel. Self-guided tours of the University Library and the Undergraduate Library may be checked out at the information desk or the media center.
Summer hours vary.