The Civilian Conservation Corps Museum recognizes and preserves the work of the men who participated in conservation and reforestation projects as part of the Civilian Conservation Corps (CCC), one of Franklin D. Roosevelt's New Deal programs.

The museum offers exhibits.

The Society operates the Baldwin Reynolds House Museum. Built in 1843 and listed on the National Register of Historic Places, the house now displays artifacts from the Baldwin and Reynolds families, as well as other Crawford-area families; 23 rooms are on display, some outfitted to reflect their original use and others used for historical displays.

The society offers research library access and educational and recreational events; the museum offers exhibits and tours.

The Alden B. Dow Home & Studio and the Alden B. Dow Archives consist of the residence and working area of Alden B. Dow (1904-1983), famed architect. Born into the Dow Chemical founding family, Alden B. Dow created his own unique architectural aesthetic after apprenticing with Frank Lloyd Wright. In his home, the use of planes and angles, rich colors, glass, wood, and his unit block system all assist in synthesizing the interior and outdoor experiences. The structure was initiated in 1934. The archives contain project files, correspondence, 22,000 project drawings, films, lectures, oral histories, sketches, architectural texts, and inspirational objects.

The site offers guided tours, educational tours, custom educational guided tours, fourth grade and high school educational programs, and public access archives.

This National Historic District holds what has been called the most complete example of Civilian Conservation Corps park architecture. Selected as a park site in the 1930s, Lee Creek Valley provided the native wood and stone that the Civilian Conservation Corps used to craft the park's CCC/Rustic Style buildings and structures that include a native stone dam, a unique pavilion/restaurant, cabins in several styles and sizes, roads, trails, stone walls, bridges, and the iconic Yellow Rock Overlook.

The site offers exhibits.

The Oliver House Museum is a historic house museum, focusing on the years 1852 through 1942. The 1852 Italianate structure contains artifacts from the family who resided in the home, as well as from the Yates County Genealogical & Historical Society collections. Topics covered by exhibits include Jemima Wilkinson (1752-1819), the first U.S. woman to found a religious movement (the Universal Friends), and Native Americans.

The museum offers guided tours and unguided exploration, period rooms, and exhibits.

Eisenhower Birthplace State Historic Site features the modest two-story frame house in the railroad town of Denison where Dwight D. Eisenhower was born in 1890. Eisenhower's father worked for the railroad and the birthplace contains family possessions and period antiques demonstrating the lifestyle of a late 19th-century working family. The site includes six acres of scenic woods and creek bottomland intersected by an abandoned rail track turned into a hiking path. The visitor center is a historic structure filled with hundreds of items relating to Eisenhower and his role in U.S. and world history.

The site offers exhibits and tours.

This 1740 building is historically significant as the oldest courthouse in Illinois and the only one remaining from the state’s territorial period (1787–1818). It is architecturally significant as an example of the French Colonial vertical log poteaux-sur-solle ("post-on-sill") construction technique. Inside are three exhibit rooms and another furnished to represent the courtroom in the 1790s. Exhibits in the Courthouse depict issues that came before the court around 1800 and a history of the structure as it was moved in the early 20th century to St. Louis and Chicago before its eventual return to Cahokia.

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

For 94 years, workers at the Ben Schroeder Saddletree Company crafted tens of thousands of wooden frames for saddle makers throughout the United States and Latin America. It was the nation's longest lasting, continually operated, family-owned saddletree company. John Benedict "Ben" Schroeder, a German immigrant, started his business in a small brick workshop in 1878, though it grew to include a woodworking shop, boiler room and engine shed, a sawmill, a blacksmith shop, an assembly room, the family residence, and several outbuildings. After his death, Ben's family kept his dream alive by adding stirrups, hames for horse collars, clothespins, lawn furniture, and even work gloves to their line of saddletrees. The factory closed in 1972 and was left completely intact. Recognized by historians as one of America's premier industrial heritage sites, the Schroeder Saddletree factory has been restored to allow visitors to Madison to tour through this vintage workplace. Belts turn and the original antique woodworking machines spin into action. Sawdust is whisked from machines into the boiler room, where it once fueled the steam boiler that powered the equipment. Saddletree patterns hang, cobweb covered, from the ceiling.

The museum offers tours, demonstrations, and exhibits.

The 13–acre Eugene O'Neill National Historic Site commemorates the only Nobel Prize–winning U.S. playwright, through preservation of the Tao House. A Spanish–colonial structure with an interior scheme inspired by Chinese Taoism, this building served as the home of O'Neill and his wife Carlotta between 1937 and 1944. Eugene O'Neill (1888–1953) is the author of The Iceman Cometh, Long Day's Journey Into Night, and A Moon for the Misbegotten, among other works. His pieces introduced realism to American drama, were among the first U.S. plays to include speeches in the vernacular, and are populated with marginalized characters.

The site offers guided tours of the Tao House, self–guided tours of the grounds, and twice yearly presentations of O'Neill's plays. Reservations are required to enter the house.

The 163-acre Burrit on the Mountain: A Living Museum consists of the 1936 mansion of Dr. William Henry Burrit, physician and inventor; a historic park with restored 19th-century houses and period crops; a barnyard; and animals. Exhibits cover the history of the land and people of Tennessee and Alabama's Southern Cumberland region. Living history demonstrations include blacksmithing, spinning, and cooking over an open hearth.

The museum offers exhibits, period rooms, living history interpreters, demonstrations, nature trails, educational programs, summer camps, Field Trip Fridays, monthly home school programs, traveling trunks for rent, and in-classroom outreach programs. Reservations are required for Field Trip Fridays.