Idaho's 52 public library systems had a combined book stock of nearly 3,506,000 volumes in 2000 and a total circulation of more than 8,263,000. The largest public library system was the Boise Public Library and Information Center, with about 340,800 volumes; the leading academic library, at the University of Idaho (Moscow), had 1,064,707 volumes. Total public library income was $23,811,000 in 2000.
The state also has 31 museums, notably the Boise Art Museum, Idaho State Historical Museum (Boise), and the Idaho Museum of Natural History (Pocatello). The University of Idaho Arboretum is at Moscow, and there is a zoo at Boise and an animal park in Idaho Falls. Major historical sites include Cataldo Mission near Kellogg, Spalding Mission near Lapwai, and Nez Percé National Historical Park in north-central Idaho.