Lincoln's New Salem preserves the site of New Salem village, where young Abraham Lincoln lived for six formative years, from 1831 to 1837. The centerpiece of Lincoln's New Salem is the imaginative recreation of the log village. Built in the 1930s and 1940s as a Civilian Conservation Corps program, the village features twenty-three historically furnished buildings, including several homes, stores, and tradesmen's shops, as well as a tavern, school, wool carding mill, and a saw- and gristmill. Scattered throughout the village are log barns and other outbuildings.

The site offers exhibits, a short film, living history interpreters, performances, lectures, and other recreational and educational events and programs.

The Sam Houston Schoolhouse is named for the soldier, statesman, and pioneer from East Tennessee. Built of hewn poplar logs, it is representative of field schools of the late 18th and early 19th centuries. Desks are cleverly converted from the window apertures, and a seven-foot ceiling hovers over hewn log seats.

The schoolhouse offers exhibits.

Postville Courthouse is a reproduction of Logan County's first seat of government. Constructed in 1840, the original building until 1848 was one of the courts in which Abraham Lincoln argued cases while traveling the historic Eighth Judicial Circuit. The first floor has a reception and orientation room and an exhibit gallery. On the second floor are rooms representing an 1840s courtroom and a county office.

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

Graeme Park is a 42-acre historic park, featuring the Keith House, the only surviving residence of a Colonial Pennsylvania Governor. The mansion has remained virtually intact since the late 18th century.

The site offers tours, educational programs, and occasional recreational and educational events (including living history events).

Bryant Cottage was built in 1856 by Francis E. Bryant (1818–1889), a friend and political ally of Senator Stephen A. Douglas. According to Bryant family tradition, on the evening of July 29, 1858, Douglas and Abraham Lincoln conferred in the parlor of this house to plan the famous Lincoln-Douglas Debates. The one-story, four-room wood frame cottage has been restored and is interpreted as an example of middle-class life in mid-19th-century Illinois. The furniture on display is of the Renaissance Revival style, appropriate for a small-town family of the mid-19th century.

The site offers tours and occasional recreational and educational events.

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.

The Vandalia State House, the fourth Illinois statehouse, served as the capitol from 1836 until 1839 and is the oldest surviving capitol building in the state. The first floor contains a large entry hall and rooms representing the offices of the Auditor, Treasurer, and Secretary of State, as well as the Supreme Court chamber. The second floor is composed of a central hall and recreated House and Senate chambers, each of which contains a visitor gallery reached by staircases.

The site offers an exhibit, tours, and occasional recreational and educational events.

Bidwell Mansion State Historic Park is a three-story, 26-room Victorian house museum that stands as a memorial to John and Annie Bidwell. John Bidwell was known throughout California and across the nation as an important pioneer, farmer, soldier, statesman, politician, and philanthropist. Annie Ellicott Kennedy Bidwell, the daughter of a socially prominent, high-ranking Washington official, was deeply religious, and committed to a number of moral and social causes. Annie was very active in the suffrage and prohibition movements.

The park offers a short film, exhibits, and tours.

California's executive mansion, popularly known as the Governor's Mansion, was built in 1877 for Albert and Clemenza Gallatin. Albert was a partner in the Sacramento hardware store of Huntington & Hopkins. The State of California purchased the house from Joseph and Louisa Steffens to use as a home for California's first families in 1903 for $32,500. Victorian architecture was somewhat out of style by then, but the house was suitably impressive, conveniently located, and comfortable. Today's guests see marble fireplaces from Italy, gold-framed mirrors from France, and exquisitely handcrafted hinges and doorknobs, all of which are reminders of the Gallatins and the Victorian era. Outside some of the Mansion's abundant vegetation includes flowers, shrubs, and trees dating back to 1877. When visitors look behind the grape-stake fence and see Governor Brown's swimming pool built in 1959, they are reminded that the Governor's Mansion State Historic Park is really a walk through time.

The park offers tours and occasional recreational and educational events.

William Preston was about 45 years old when he moved his family to Smithfield in March of 1774. He and his wife had seven children at that time; five more children were born at Smithfield. Colonel Preston began at once to make Smithfield a productive and profitable plantation. Smithfield was first opened to the public in 1964; and today is a living document of the past.

The site offers tours, living history demonstrations, workshops, classes, and other occasional educational and recreational events.