Belle Grove is an 18th-century grain and livestock farm, which, in its prime (circa 1815), encompassed about 7,500 acres of land. The unique limestone house was completed in 1797 for Major Isaac Hite and his wife Nelly, sister of future President James Madison. The house has remained virtually unchanged through the years, offering visitors an experience of the life and times of the people who lived there in the late 18th and early 19th centuries. During the Civil War, Belle Grove was at the center of the decisive Battle of Belle Grove or Cedar Creek. Today, the plantation includes the main house and gardens, original outbuildings, a classic 1918 barn, an overseer's house, the slave cemetery, a heritage apple orchard, fields and meadows, and scenic mountain views.

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

Visitors to the Astor House Museum and Clear Creek History Park can explore how the people of Golden, CO, settled a bustling town that served the developing West as a government center and mining supply town. They can tour an 1800s boarding house and homestead where early Colorado pioneers worked and played, see what life was like on the frontier, and hear stories of the people who called this place home. The Astor House was built in 1867 and stayed in continuous operation as a boarding and rooming house until 1971—over 100 years! It rented rooms and served hot meals to lawmakers, laborers, miners, students, and families, some of whom stayed for weeks or even months. Clear Creek History Park recreates the look and feel of a late 1800s mountain ranch complete with gardens, a working blacksmith shop, schoolhouse, and chicken coop (chickens included).

The sites offer tours, demonstrations, educational programs, and occasional recreational and educational events (including living history events).

The Woodrow Wilson House is a national historic landmark and house museum that focuses on President Woodrow Wilson's "Washington Years" (1912–1924). The museum promotes a greater awareness of Wilson's public life and ideals for future generations through guided tours, exhibitions, and educational programs. The museum also serves as a community preservation model and resource, dedicated to the stewardship and presentation of an authentic collection and property.

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

The Chittenango Landing Canal Boat Museum is located within the Old Erie Canal State Historic Park in Central New York State. During the 19th and 20th centuries, 96-foot long cargo boats were built and repaired on this site. The Museum tells of the construction of these boats, the workings of the restored dry docks, and the social history of the canal area.

The museum offers exhibits, educational programs, and occasional recreational and historical events.

The Society operates Heritage Junction, a site including eight historic buildings: the 1890 Pardee House, the 1893 Newhall Ranch House, the 1887 Saugus Train Station, the 1865 Mitchell Adobe, the 1919 Edison House, the 1878 Kingsburry House, the 1927 Callahan Schoolhouse, and the 1926 Ramona Chapel.

The society offers lectures, film screenings, and occasional recreational and educational events; the Kingsburry House offers tours; and the Saugus Train Station offers exhibits.

The Society operates several historical sites, including the Pioneer Village Museum Complex, the Cozens Ranch and Stage Stop Museum, and Heritage Park. The Pioneer Village Museum features displays including original railroad cars and railroad exhibits, plus an historic enclosure featuring five original structures that interpret Grand County history. One of the earliest stage stops in Grand County, the Cozens Ranch and Stage Stop Museum includes staging and freighting history and features a replica stagecoach, several local history exhibits, and an authentic interpretation of 19th-century stagecoach travel. Heritage Park preserves the restored 1903 McElroy Livery and an 1885 log cabin.

The society offers in-character presentations; the Pioneer Village Museum offers exhibits; the Cozens Ranch offers exhibits; the Livery and cabin offer tours.

On the west side of 1,000-foot-high Heceta Head, 205 feet above the ocean, the lighthouse is one of the most photographed on the coast. The light at top of 56-foot tower was illuminated in 1894; the automated beacon, seen 21 miles from land, is rated as the strongest light on the Oregon coast.

The site offers tours and occasional recreational and educational events.

The Society owns and operates the Oregon Electric Railway Museum, the largest trolley museum in the Pacific Northwest.

The museum offers exhibits and trolley rides.

The Society's Museum displays an eclectic collection of artifacts, documents, and photographs that have a connection to a Henniker person, place, or event. All time periods are represented, from the town's founding in 1768 to the present, but emphasis is generally placed on the earlier periods of the town's history.

The museum offers exhibits and research library access.

The Mark Twain Boyhood Home and Museum properties includes eight buildings: six historically significant buildings and two interactive museums whose collections include 15 original Norman Rockwell paintings. A self-guided tour of the Mark Twain Boyhood Home and Museum properties gives visitors the chance to explore the Hannibal of Samuel Clemens's childhood and experience the beloved stories he created as Mark Twain through the power of his imagination.

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