Fort Smith National Historic Site encompasses the remains of two forts, as well as the Federal Court for the Western District of Arkansas, the circa 1838 Commissary Building, and a reconstructed gallows. The original fort, Fort Smith, was in use between 1817 and 1824. The Commissary Building supplied food to troops stationed at the fort, and is currently furnished to its 1850s appearance. The visitor's center, located within the historic barracks, courthouse, and jail, contains the courtroom of Judge Parker and exhibits on the Trail of Tears, the federal court, and the military. The Cherokee, Choctaw, Chickasaw, Muscogee Creek, and Seminole walked the Trail of Tears from their ancestral homelands to Indian Territory, an area defined by the U.S. government. The fort served as training grounds for both Mexican War and Civil War soldiers. By 1872, the military compound was transformed into a courthouse and jail. It continued to function as such until 1896. Judge Isaac Parker (1838-1896) is the most famous of the judges who served at this courthouse. Known as the "Hanging Judge," during his 21 years at the fort Parker ordered the execution of 160 men. All of these convictions were for rape or murder, both of which, in the period following the Civil War, were federally required to be punished by death. Many of these cases involved acts of violence between European Americans and Native Americans. The site collections include over 225,000 artifacts.

The visitor's center offers exhibits, films, and period rooms. The Commissary Building offers period rooms. The site offers a walking trail with wayside exhibits on the Trail of Tears, Junior Ranger activities, educational programs, anniversary lectures on punishment and specific executions, in-service educator workshops, and outreach presentations. Reservations and at least two weeks notice is required for school groups. The website offers historic images, an interactive panoramic photograph, a webcam, an artifact of the month, a pre-visit PowerPoint presentation, teaching modules, lesson plans, videos for rental, photograph exhibits for rental, and word searches.

The Arkansas Post National Memorial commemorates the first European colony to be built in the Mississippi River Valley. The post was established by the French in 1686 on the site of a Quapaw village. Today the site presents its more than 300 years of social history. The post played a part in the fur trade, Civil War, and Revolutionary War—most specifically the 1783 Colbert Raid, the singular Revolutionary War military action to occur in Arkansas.

The site offers an introductory video, guided tours, self-guided tours, exhibits, musket and cannon demonstrations, Junior Ranger activities, educational programs, and outreach programs. Reservations are required for guided tours and all educational programming. The website offers a maze and word search.

The Little Rock Central High School National Historic Site preserves the site at which nine African American students entered the Little Rock Central High School for the first time on September 23, 1957. Their right to do so, determined under the 1954 Brown v. Board of Education of Topeka decision, proved a national symbol of the end of segregation in public schools. Despite the legality of the situation, desegregation was still highly inflammatory to many. The students had previously been turned away by the Arkansas State Guard before federal troops were deployed to escort them to and from the school.

The site offers interactive exhibits, captioned audio-visual programs, oral history listening stations, 30-minute guided group tours of the high school, gardens, Junior Ranger activities, Trail of Tears guided bicycle tours, student educational programs, teacher workshops for credit, school outreach presentations, and a traveling trunk. Tours of the school require two weeks advance notice, and groups must include 10 or more individuals. The high school is still in use. As a result, visitors may not tour the school without a guide. The website offers oral history videos, a pre-visit booklet, and lesson plans.

The 4,200-acre Pea Ridge National Military Park commemorates the March 7 and 8, 1862, Civil War Battle of Pea Ridge. The battle ended in a decisive Union victory. The site is considered to be the most intact Civil War battlefield in the country. Confederate generals included Earl van Dorn, Sterling Price, Benjamin McCulloch, James McIntosh, and Albert Pike; while the Union generals were Samuel Ryan Curtis, Franz Sigel, and Alexander Asboth.

The park offers a 28-minute film, traditional and wayside exhibits, a 7-mile tour road, a 9-mile horse trail, a 7-mile hiking trail, demonstrations, self-guided school tours, guided school tours, Junior Ranger activities, and Scout programs. Reservations are required for school visits. The website offers historic photographs, artwork depicting the battle, and soldier letter and diary excerpts.

The Museum of Discovery presents explorations of science, mathematics, technology, and history—including an exhibit on Arkansas's native peoples.

The museum offers exhibits, exhibits for rent, self-guided and guided tours for school groups, in-class outreach presentations, and recreational and educational activities.

The Sevier County Historical Society Museum consists of a replica blacksmith shop, jail, and 1897 bank, as well as a 1940s residence furnished in period style.

The museum offers period rooms.

In 1906, John Huddleston, the local farmer who owned this property, found the first diamonds here in Murfreesboro, AR, and started the diamond mining rush. After a series of ill-fated mining ventures followed by tourist attractions, the site became an Arkansas state park in 1972. Visitors today are invited to prospect in the park's diamond search area, a 37-acre plowed field that is the eroded surface of an ancient volcanic pipe that, 95 million years ago, brought to the surface the diamonds and some of the semiprecious stones lucky visitors find here today. Within the park boundary many remnants of old mining ventures remain including the Mine Shaft Building, the Guard House, mining plant foundations, old mining equipment, and smaller artifacts. Nowhere else is North American diamond mining history as evident or as well-preserved as here.

The site offers short films, exhibits, tours, educational programs, and occasional recreational and educational events.

Petit Jean features CCC/Rustic Style architecture that endures as a legacy to the craftsmanship and conservation achievements of the Civilian Conservation Corps. The park includes three National Historic Districts and contains more than 80 buildings, trails, and bridges. The most prominent architectural structure, Mather Lodge, stretches along the bluff of scenic Cedar Creek Canyon. The bluffs, waterfalls, and vistas of Petit Jean Mountain inspired the creation of Arkansas's first state park, and along with it Arkansas's state park system.

The site offers occasional recreational and educational events.

Mammoth Spring, the 10th largest spring in the world, and a National Natural Landmark, flows nine million gallons of water each hour. Following the Civil War, this immense water source attracted industrialists who built a gristmill, and later, a dam here. Next, the investors opened large roller mills and a shoe factory. Soon after, the railroad arrived. Still standing near the spring is the charming 1886 Frisco Depot. At the dam, you can walk through the 1925 power plant that brought electricity to the region long before most other rural areas.

The site offers short films, exhibits, tours, and occasional recreational and educational events.