It was once called "the largest and best arranged dwelling house west of St. Louis." Today Oliver Anderson's mansion is best known for the three bloody days in 1861 when it was a fiercely contested prize in a Civil War battle between the Union army and the Missouri State Guard. Today, it is restored and furnished in the mid-19th-century fashion, but it still displays damage from the shot and shell that hammered it during the Battle of Lexington. The house changed hands three times, and soldiers met their death in the downstairs hallway. The battlefield is quiet now, and restored gardens and orchards dot the landscape. But the remnants of the trenches can still be seen, and the graves of unknown Union dead echo a time less peaceful. In addition to tours of the 1853 Anderson House, visitors may explore the 100 acres of the battlefield preserved at the historic site. A visitor center with exhibits and audiovisual programs explains the stirring events of Sept. 18–20, 1861, and why the "Battle of the Hemp Bales" lifted Southern spirits and further dampened Northern hopes of an easy victory in the struggle for Missouri.

The site offers exhibits, tours, a short film, occasional living history events, and occasional recreational and educational events.

In 1864, the Arcadia Valley was the scene of one of the largest and most hard-fought battles waged on the state's soil: the Battle of Pilot Knob. Confederate Maj. Gen. Sterling Price invaded Missouri from Arkansas, leading an army of 12,000 men. On Sept. 26–27, 1864, while en route to the St. Louis area, Price attacked the weakly defended Union post of Fort Davidson at Pilot Knob. This proved to be a mistake. Fort Davidson was defended by a garrison of 1,450 men led by Gen. Thomas Ewing Jr., the brother-in-law of Gen. William Tecumseh Sherman. The Confederates lost nearly 1,000 men in attacking the small earthen fort and its 11 cannons. Today, the site preserves Fort Davidson and the Pilot Knob battlefield where so many Confederate and Union soldiers lost their lives. A visitor center interprets the battle and Maj. Gen. Price's raid. It features exhibits, a research library, an audiovisual presentation, and a fiber optics diorama of the battle.

The site offers a short films, exhibits, research library access, tours, occasional living history events, and occasional recreational and educational events.

The Grant Boyhood Home was the home of Ulysses S. Grant, 18th president of the United States, from 1823, when Grant was one year old, until 1839, when he left to attend West Point. Ulysses Grant lived in this home longer than any other during his lifetime. Jesse and Hanna Grant, the parents of young Hiram Ulysses Grant, built the original two-story brick section of the Grant Boyhood home in 1823, when they moved to Georgetown from Point Pleasant in Clermont County, where Ulysses had been born the year before. Grant attended the Schoolhouse from the ages of about six to 13. The building, built in 1829, consisted of only one room at that time.

The site offers tours.

The Scarsdale Historical Society seeks to preserve and share the history of Scarsdale and the Central- and Mid-Westchester area, NY. The society operates two historic properties, the circa 1734 Cudner-Hyatt House and an 1828 Quaker meeting house. Topics addressed include daily life in the late 19th-century, the Civil War, and the Lenape people.

The society offers exhibits; two-hour curriculum-based educational programs with a lesson, tour of the Cudner-Hyatt House, activities, and a take-home project; one-hour educational programs; group tours; Scout activities; three themed traveling trunks with artifact replicas; and outreach presentations for schools. The exhibits and Cudner-Hyatt House are partially wheelchair accessible.

The Centre Hill Museum is a historic house museum. The 1823 residence is used to discuss its own history, including Presidential visits and its role in the Civil War. The interior houses decorative arts dating from 1700 through the 1900s. Collection highlights include a circa 1900 aviary of stuffed birds. The structure displays Greek Revival, Federal, and Colonial Revival elements.

The museum offers exhibits.