Since time immemorial, the Nimiipuu or Nez Perce have lived among the rivers, canyons, and prairies of the inland northwest. Despite the cataclysmic change of the past two centuries, the Nez Perce are still here. Visitors can explore the park's 38 sites—in Idaho, Montana, Oregon, and Washington&#8212and experience the story of a people who are still part of this landscape.

At its visitor center in Spalding, ID, the site offers a short film, exhibits, tours, demonstrations, and educational programs.

The Idaho State Historical Society recognizes three historical Franklin properties, including Relic Hall and Franklin Cooperative Mercantile Building. These two buildings house and display local history artifacts.

The properties offer exhibits.

In 1864, Ben Holladay was awarded a contract to deliver mail from Salt Lake City to Walla Walla, WA. Rock Creek became a "home station," where stage drivers and attendants lived while they were off-duty and where passengers could buy a meal or a night's lodging. The original station consisted of a lava-rock building that served as a hotel and barn. In 1865 a store was built at the site. A small community grew up around the business, which also became a social center.

The site offers tours.

The Lemhi County Historical Museum preserves the life and times of Sacajawea, Lemhi County's most famous resident, and the more general history of Lemhi County.

The museum offers historical artifacts and exhibits. The website offers visitor information and detailed historical information regarding the life and times of Sacajawea.

Idaho Territory was less than 10 years old when the territorial prison was built east of Boise in 1870. The penitentiary grew from a single cellhouse into a complex of several distinctive buildings surrounded by a high sandstone wall. Convicts quarried the stone from the nearby ridges and completed all the later construction. Over its century of operation, the penitentiary received more than 13,000 convicts, of whom 215 were women. Spurred in part by conditions that sparked a general riot in 1971 and an even more severe riot in 1973, the inmate population was moved to a modern penitentiary south of Boise and the Old Idaho Penitentiary was closed on December 3, 1973. Visitors begin with a video presentation recalling prison history, notorious inmates, and daily prison life. Once inside the Yard, they can imagine life in the foreboding sandstone cellhouses, see the contrasting beauty of the historic rose gardens, and view the effects of the 1973 riot. They may also visit Solitary Confinement, known as "Siberia," as well as Death Row and the Gallows.

The site offers a short film, exhibits, and educational programs.

The Clearwater Historical Museum seeks to preserve and share the history of the Clearwater River country, Idaho. This area includes Clearwater, Nez Perce, Lewis, Shoshone, and Idaho Counties. Collections include Nez Perce, Chinese, gold mining, logging, medical, prehistoric, barbershop, and hotel artifacts, in addition to historic firearms, a stamp mill, and china.

The museum offers exhibits, group tours, school tours, and research opportunities. All tours are customizable, and require reservations. The website offers historical photographs.

The Shoshone County Mining and Smelting Museum presents the local history of the Silver Valley, Idaho, with a particular emphasis on mining and smelting history. Exhibits cover mining, environmental history, smelting equipment, minerals, metallurgy, medicine, and electricity. Collection highlights include an 1899 Nordberg Air Compressor and scale models of the Bunker Hill and Sunshine Mines. Dating to 1906, the museum structure was built as the residence of Stanley A. Easton (died 1961), manager of the Bunker Hill and Sullivan Mining and Concentrating Company.

The museum offers exhibits and a period sitting room.

The Idaho State Historical Society is primarily a state-wide preservation advocacy organization. However, the society does operate the Idaho Historical Museum and an exhibit on military history located in the Old Idaho Penitentiary. The museum covers topics inclusive of prehistoric life, the fur trade, the gold rush, pioneer life, Native American life, and area Chinese and Basque populations. It also offers 18th- and 19th-century period rooms. The military exhibit offers artifacts from as early as the Middle Ages.

The museum offers tours, exhibits, period rooms, collections access for researchers, a monthly brown bag series, traveling exhibits, traveling trunks, student worksheets, educational marionette shows, hands-on activities, outreach programs, slide shows for rent, and other educational programming. The society also offers a public archives and research center. The website offers lesson plans, a club for fourth graders with activity downloads, and reading materials for young children.