The 1760 Georgian colonial Mount Clare Museum House once served as a plantation residence. The site was home to Charles Carrol (1737-1832), U.S. Senator and Barrister. The majority of the collection's 3,000 18th- and 19th-century pieces of furniture, artworks, decorative arts, and other artifacts are on display within the home. The site is primarily used to interpret 18th-century plantation life—that of the owners, slaves, and indentured servants.

The house offers an introductory video, tours, Scout and elementary school student tours with optional activities, outreach programs on 18th-century children's life for students, day camps, and research library access. Appointments are required for research library access and student programming. The second floor of the residence is not wheelchair accessible. The website offers the introductory video, activities, and lesson plans.

The Friendship Fire Company was established in 1774, and was the first volunteer fire company in Alexandria. The current firehouse was built in 1855, remodeled in 1871, and renovated in 1992. The Engine Room on the first floor houses hand-drawn fire engines, leather water buckets, axes, sections of early rubber hose, and other historic fire-fighting equipment. An exhibition discusses the development of firefighting technology and other fire companies that have served the citizens of Alexandria. The second floor Meeting Room is furnished the way it was during the late 19th century, the real heyday of Friendship as a community organization. On view here are various ceremonial objects such as parade uniforms, capes, banners, and other regalia. George Washington's association with the Friendship Fire Company, honored by members for over 200 years, is symbolized by several images of him throughout the museum.

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

The Minisink Valley Historical Society seeks to preserve and share the history of the Minisink Valley which stretches across New Jersey, New York, and Pennsylvania. To this end, the society operates the Fort Decker Museum of History. The structure was originally built in 1760 as a defensive center against Native American attack and as a trading post.

The society offers archival access, exhibits, and 50-minute outreach slide presentations. Appointments are required for archival access. Slide presentation topics include author Stephen Crane, the Delaware and Hudson Canal, artist John Newton Howitt, cemetery history, Theodore Roosevelt, Franklin D. Roosevelt, Eleanor Roosevelt, and the bluestone industry. The website offers a small collection of music and historical photographs.

Rockingham is believed to be the second oldest house in the Millstone River valley, its original construction dating between 1702 and 1710. Jedidiah Higgins, one of the earliest settlers in the Rocky Hill–Kingston area, is credited with building the house. In 1783, while the Continental Congress was meeting at Nassau Hall in nearby Princeton, Congress rented this house from the widow of Judge John Berrien for use by General George Washington from August 23 to November 10, 1783. Martha Washington joined him at Rockingham.

A second website for the site can be found here.

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

Gadsby's Tavern Museum consists of two buildings, a circa 1785 tavern and the 1792 City Hotel. The buildings are named for Englishman John Gadsby who operated them from 1796 to 1808. Mr. Gadsby's establishment was a center of political, business, and social life in early Alexandria. The tavern was the setting for dancing assemblies, theatrical and musical performances, and meetings of local organizations. George Washington enjoyed the hospitality provided by tavernkeepers and twice attended the annual Birthnight Ball held in his honor. Other prominent patrons included John Adams, Thomas Jefferson, James Madison, and the Marquis de Lafayette. Visitors are invited to take a moment to journey back to the 18th-century tavern and hotel where famous historical figures and everyday people dined and slept and learn about the history, architecture, decorative arts, social customs, food, and clothing of a past era.

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

The Hawaiian Historical Society seeks to preserve and share the history of Hawaii and the Pacific region. The society places particularly emphasis on the creation of scholarly publications. The society's archival collections are strongest in 19th-century materials and include voyage information, items in the Hawaiian language, newspapers, manuscripts, photographs, maps, and pamphlets.

The society offers access to archival collections for research.

After railroads made the region accessible in the late 19th century, coastal Maine became a fashionable destination for wealthy summer people. Many of the newcomers bought and restored the fine old houses built during the prosperous years following the American Revolution. In 1898, Mrs. Emily Tyson and her stepdaughter, Elise, purchased the c. 1785 Hamilton House, built on a site overlooking the Salmon Falls River. The Tysons flung themselves into a lifelong project to restore the house to its former glory. Influenced by literary imagery, including the writings of their neighbor and friend, Sarah Orne Jewett, they decorated with a mixture of elegant antiques, painted murals, and simple country furnishings to create their own romantic interpretation of America's colonial past.

The house offers tours and educational and recreational programs.

Wilbor House, the Society's headquarters, stands on land purchased from the Sakonnet Indians in 1673. Built by Samuel Wilbore in about 1690, the original house consisted of only two rooms, one above the other, and a cramped stairway and attic. It was typical of 17th-century New England. Today, one unusual feature of Wilbor House is that it spans three centuries and contains rooms representative of each.

The house offers tours and occasional recreational and educational events.

Historic Cherry Hill is a 1787 residence, occupied by the Van Rensselaer family until 1963. The site presents the changing culture, decorative arts, economic climate, and social classes of the 176 years in which the home was in use. The structure exists in its 1963 state in order to render social and architectural evolution visible to visitors. The Van Rensselaers were originally considered Hudson River manor lords, members of a group of wealthy local Dutch settlers. However, as early as the 1820s, the family began to face economic pressure which would increase with the formation of the millionaire class and the large numbers of immigrants entering the U.S. Collections include more than 20,000 artifacts—from the most mundane household items to rare examples of decorative arts styles—and 30,000 archival documents.

Cherry Hill offers period rooms; tours; interactive educational programs for students; and educational outreach programs for students. Reservations are required for groups of 10 or more. Listening assistance devices are available. The website offers two teaching units for purchase. Both won awards from the American Association for State and Local History.

Tours and on site educational programs are currently unavailable, as the site undergoes restoration. Outreach programming is still available.

The Justin Smith Morrill Homestead preserves the Greek Revival cottage of John Smith Morrill (1810-1898). During his life, Morrill worked as a blacksmith, merchant's clerk, Representative, and U.S. Senator. Unable to finish school himself, Morrill became the chief sponsor of the 1862 Land Grant Act. The act provided for a college in each state which would teach skills not previously available in the higher education system—practical science, agriculture, and engineering. These colleges also offered more traditional studies. Morrill's hobbies included architecture and landscape design.

The homestead offers period rooms, tours, gardens, and access to Morrill's library. Please call ahead to verify admission hours. Appointments are required for library access. The website offers suggested reading and a video virtual garden tour.