Early settlers first established Montauk as a self-sufficient community in the early 1800s. A gristmill, built in 1896, is open seasonally for tours. This historic site was a vital part of the Montauk Community into the 1920s. The "Old Mill" had elaborate milling machinery. Much of it is still located there.

The park offers tours and occasional educational and recreational events.

Fifteen miles of trail traverse this park, leading visitors to spectacular scenery, natural wonders, and the famous castle ruins. Looming over all is the ruin of the turn-of-the-century stone castle built by a wealthy businessman, Robert M. Snyder. The empty shell of this great mansion overlooks Ha Ha Tonka Spring and Lake of the Ozarks from atop a 250-foot bluff.

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

One of America's highest ranked military officers, Gen. John J. "Black Jack" Pershing, spent most of his childhood years in the small town of Laclede. Pershing was born Sept. 13, 1860, and moved into the Gothic nine-room house in Laclede with his family at age six. He taught at Prairie Mound School, and in 1886, graduated from the U. S. Military Academy at West Point, thus beginning his military career. Between 1886 and his military retirement in 1924, Pershing fought his way up through the military ranks. In 1917, Pershing was sent to France as Commander-in-Chief of the American Expeditionary Forces in World War I and two years later was named General of the Armies of the United States by a special act of Congress. Today, visitors can tour Gen. Pershing's boyhood home. A statue of "Black Jack" stands next to the home surrounded by granite tablets naming war veterans. Inside Prairie Mound School, an exhibit gallery allows visitors to walk through the many doorways Gen. Pershing passed through during his childhood life, military career, and numerous accomplishments.

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

The Youngstown Historical Center of Industry and Labor provides a dramatic overview of the impact of the iron and steel industry on Youngstown and other Mahoning Valley communities. The building, designed by renowned architect Michael Graves in 1986, houses the museum's permanent exhibit, "By the Sweat of Their Brow: Forging the Steel Valley," which explores labor, immigration, and urban history, using videos, artifacts, photographs, and reconstructed scenes. Objects on display range from workers' tools and clothing to "last heats," the last batches of steel produced at each of the mills before they closed. Hundreds of photographs, some more than 30 feet long, are used throughout the museum. Videos examine topics such as housing, recreation, and urban history. Life-size scenes—including a mill's locker room, part of a company-built house, and a blooming mill, where steel ingots were shaped for further processing—help visitors understand steelmaking and the lives of steelworkers.

The center offers exhibits, tours, research library access, and educational programs.

The Larz Anderson Auto Museum seeks to increase interest in collector cars and foster community among those interested in antique vehicles. The museum collection includes at least 14 vehicles from before 1930, including an 1899 Winton. Interpretation focuses on the ways in which automobile technology has altered U.S. culture.

The museum offers exhibits, lawn events, guided tours, customizable guided group tours, lesson plans, a play zone, and educational programs for students.

The Statehouse Education and Visitors Center interprets the state capitol's history and significance for the public, and guides school groups in their study of government, citizenship, and Ohio history. The Statehouse complex represents one of America's finest examples of Greek Revival civic architecture, and is one of the oldest working statehouses in the United States. Visitors can see where and how the vital business of state government is conducted, view architectural and artistic treasures, and learn more about Ohio through guided tours, educational displays, and interactive touch-screen kiosks.

A second site, specifically for the Statehouse, can be found here.

The center offers exhibits, tours, educational programs, and educational and recreational events.

Arrow Rock State Historic Site is an integral part of the town of Arrow Rock. The site's visitor center museum features exhibits that tell about Arrow Rock and the historic "Boone's Lick Country." The Bingham Home, built by Missouri's preeminent artist of the 1800s, George Caleb Bingham, has been restored and furnished as it might have been when he lived there. The Huston Tavern, dating back to 1834, stands ready to serve you its traditional hearty fare. The old courthouse, a town doctor's home, a stone jail and other historic buildings are part of a walking tour offered at the site.

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

This modern museum has three major exhibit areas. First is the National Road, early America's busiest land artery to the West. The National Road stretched from Cumberland, MD, to Vandalia, IL. Begun in 1806, the "Main Street of America" was the only significant land link between east coast and western frontier in the early 19th century. A 136-foot diorama of the National Road plus many objects illustrates this theme. Second is Zane Grey, the "Father of the Adult Western." The Zanesville author wrote more than 80 books. His study is recreated plus many manuscripts and other memorabilia are displayed. Finally, a central portion of the museum is devoted to Ohio art pottery.

The museum offers exhibits, tours, and educational programs.

The Mark Twain Birthplace State Historic Site preserves the cabin in which Samuel Clemens (1835-1910), widely known as Mark Twain, was born. The site presents Twain's life. Exhibit highlights include furniture which once belonged to Twain; first editions of his works; and a handwritten manuscript of The Adventures of Tom Sawyer. Another of Twain's definitive works is The Adventures of Huckleberry Finn. As an author, Clemens is lauded for his sharp observational skills and intense satire.

The site offers exhibits and a public reading room.

This Italianate turn-of-the-century structure was the final home of the poet Paul Laurence Dunbar. It exhibits his literary treasures, many of his personal items and his family's furnishings. During his short lifetime Dunbar became known as the poet laureate of African Americans. Drawing on his observations of society and the experience of his parents—both former slaves—he gave voice to the social dilemma of disenfranchised people of his day and became a proclaimer of black dignity.

The site offers exhibits and tours.