The Mansfield Reformatory, built in 1886 in accordance with plans by Levi T. Scofield (1842-1917), presents the history of criminal justice in Ohio. The architecture, including Victorian Gothic, Richardsonian Romanesque, and Queen Anne styles, was intended to inspire repentance and spiritual rebirth among the criminals it housed. Prior to the construction of the prison, the site served as a training camp for Civil War soldiers. The site includes a museum.

The reformatory offers guided tours and exhibits. The website offers virtual tours and a photo gallery, which includes historical images.

As the site of 16th President of the United States Abraham Lincoln's assassination on April 14, 1865, Ford's Theatre presents the history of this famous historical figure. In addition to the site of the shooting, the society also operates the Petersen House, built in 1849, the site of Lincoln's death. The interior of the Petersen House recreates its appearance at that time.

The society offers tours of Ford's Theatre; one-act plays concerning Civil War and/or President Lincoln's history; period rooms; living history tours on the Lincoln Assassination Conspiracy or the story of Elizabeth Keckley, free African American and friend of the Lincolns; and professional development opportunities for educators. The website offers lesson plans and interview videos.

The African American Heritage Museum of Southern New Jersey presents the 20th century experience of the national African American community. The collection consists of over 3,000 artifacts, including artworks and decorative items, depicting African Americans.

The museum offers educational programs and a traveling museum which visits schools upon request. Call prior to visitation as the exhibit may be traveling.

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.

Marietta, the Federal style brick home of Gabriel Duvall, an Associate Justice of the U.S. Supreme Court, is listed on the National Register of Historic Places. Built circa 1813, Marietta remained under ownership of the Duvall family until 1902. Justice Duvall's law office and root cellar still remain today. Marietta is situated on 25 acres of lawn and wooded areas and the grounds boast two County Champion trees and lovely old boxwood. Marietta operates as an historic house museum and is furnished and interpreted to reflect the three generations of Duvall's that occupied the house. The Society of Mareen Duvall Descendants has relocated the family graveyard from its original location to the serene surroundings at Marietta.

The house offers tours, educational programs, workshops, and occasional educational and recreational events.

The Texas Highway Patrol Museum chronicles the lives of Department of Public Safety officers past and present, while honoring the 74 troopers who have been slain while in the service of the people of Texas. Collections include vintage uniforms, Bonnie Parker and Clyde Barrow photographs, and officer memorabilia.

The museum offers exhibits and programs on drunk driving and personal safety.

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.

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.

The Trenton Police Museum preserves and shares the history of the law enforcement officers of Trenton, New Jersey. Collections include historic photographs. The museum is currently located in the basement of the city police department.

The museum offers exhibits for individual visitors and small groups. All visitations require appointments. The website offers a digital exhibit summarizing the history of the department.

The Police Heritage Museum presents the history of the police force through the display of artifacts and historic records of police officers, their departments, and the techniques and equipment they used to combat crime and preserve peace and order in their communities.

The museum offers online virtual exhibits, on-site exhibits, and guided tours.