David Davis (1815–1886) was born in Maryland and studied law in New England. In 1862 President Lincoln appointed Davis to the United States Supreme Court. In 1877 Davis resigned from the court after being elected to the United States Senate by the Illinois legislature and served as Senate president pro tempore from 1881 to 1883. Davis commissioned French-born architect Alfred Piquenard to design this late-Victorian style mansion, primarily as a residence for his wife, Sarah Davis. The three-story yellow brick home comprises 36 rooms. The large, tree-shaded lot includes an 1872 wood house, a barn and stable, privies, a foaling shed, carriage barn, and a flower and ornamental cutting garden. The circular drive to the Mansion remains as originally configured. The property was entered on the National Register of Historic Places in 1972 and in 1975 was declared a National Historic Landmark.

The site offers tours, a short film, and educational and recreational events and programs.

Once home to prehistoric Native Americans, Pond Spring is the post-Civil War home of General Joseph Wheeler, a Confederate major general, a U.S. congressman, and a Spanish-American War general. Following the Civil War, Wheeler became a national symbol for reunification and reconciliation. Wheeler's daughter, "Miss Annie Wheeler," served in three wars as a Red Cross nurse. The 50-acre site includes a dogtrot log house built around 1818, a circa-1830 Federal-style house, the 1880s Wheeler house, eight farm-related outbuildings, two family cemeteries, an African-American cemetery, a small Indian mound, a pond, a boxwood garden, and other garden areas.

The site offers tours by appointment.

Visitors to the site can enjoy the panoramic views of Long Island Sound from Eolia, the elegant summer mansion of the Harkness family set on over 230 seaside acres of sweeping lawns, with stately trees and spectacular gardens. Named Eolia for the island home of the Greek god of winds, the mansion was built in 1906 and purchased by Edward and Mary Harkness in 1907. The over 200 acres were a working farm and the mansion served as the Harkness's summer home.

The site offers tours.

Early travelers used the Arkansas River as a highway. Just north of the waterway lay a land of tall grasses filled with elk, buffalo, and deer. Explorers such as Audubon, Schoolcraft, and Washington Irving were startled at the expanse of land in this region. Visitors can stroll through this museum's complex of five buildings and explore life on the Arkansas Grand Prairie.

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

Fort Ross was a thriving Russian-American Company settlement from 1812 to 1841. This commercial company chartered by Russia's tsarist government controlled all Russian exploration, trade, and settlement in the North Pacific, and established permanent settlements in Alaska and California. Fort Ross was the southernmost settlement in the Russian colonization of the North American continent, and was established as an agricultural base to supply Alaska. Fort Ross was a successfully functioning multicultural settlement for some 30 years. Settlers included Russians, Native Alaskans and Californians, and Creoles (individuals of mixed Russian and native ancestry.) Along with the chapel, the structure of most historical interest at Fort Ross is the Rotchev House, an existing building renovated about 1836 for Alexander Rotchev, the last manager of Ross. It is the only surviving structure. Several other buildings have been reconstructed: the first Russian Orthodox chapel south of Alaska; the stockade; and four other buildings called the Kuskov House, the Officials Barracks, and two corner blockhouses.

The park offers exhibits, tours, educational programs, research library access, and occasional recreational and educational events.

Visitors to Hope Lodge can enjoy seeing two historic time periods side by side. Some rooms are furnished in the Colonial style (1743–1770). Other rooms are shown in the Colonial Revival style (1922–1953). Hope Lodge is the only house museum in Pennsylvania devoted to these two periods.

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

Lincoln State Monument manages most of the historical buildings in the community of Lincoln. This most widely visited state monument in New Mexico is part of a community frozen in time—the 1870s and 1880s. The monument includes 17 structures and outbuildings, 4 of which are open year-round and 2 more seasonally as museums. Most of the buildings in the community are representative of the Territorial Style of adobe architecture in the American Southwest. Lincoln is a town made famous by one of the most violent periods in New Mexico history. Today's visitors can see the Old Lincoln County Courthouse with museum exhibits that recount the details of the Lincoln County War and the historic use of the "House" as store, residence, Masonic Lodge, courthouse, and jail. Visitors walk in the footsteps of Billy the Kid, Pat Garrett, and other famous and infamous characters of the Wild West, and trace the events of 1878 through the Courthouse and the Tunstall Store, which contains displays of the original 19th-century merchandise in the original shelving and cases. They can then continue through history by visiting the Dr. Woods House, defensive torreón (tower) for the village; the San Juan Mission Church; and the Montaño store. The Anderson-Freeman Museum features historical exhibits in a timeline starting with American Indian prehistory and ending with the Lincoln County War. A 12-minute video about the Lincoln County War and the community is shown throughout the day.

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

This antebellum mansion was home to Major Robert Gamble and headquarters of an extensive sugar plantation. It is the only surviving plantation house in South Florida. It is believed that Confederate Secretary of State, Judah P. Benjamin, took refuge here after the fall of the Confederacy, until his safe passage to England could be secured. Today, the mansion is furnished in the style of a successful mid-19th-century plantation.

The park offers tours.

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.

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.