The Sandy Spring Slavery Museum and African Art Gallery promotes cross-cultural communication, and presents the history of African Americans—from their ancestral ways of life in Africa, their cross-Atlantic voyages, and the Underground Railroad to the Civil Rights Movement and their accomplishments in the United States. Collections include a cross-section of a slaving clipper ship, textiles, instruments, furniture, and a cabin which depicts the living conditions of African Americans circa 1850 to 1870.

The museum offers exhibits and 90-minute tours. At least one week advance notice is required for admission.

Historic St. Mary's City presents the first capital of Maryland and fourth permanent British New World settlement via living history interpretation. Sites include the reconstructed 1676 State House, the square-rigger Maryland Dove, a working tobacco plantation, and a Yaocomaco Native American settlement. St. Mary's is an early example of government supported freedom of religion.

The museum offers exhibits, interpretive signage, an audio tour, self-guided tours, four hour school tours which complement state educational standards, hands-on activities, and picnic areas. Reservations are required for school and group tours. The website offers a virtual tour and children's activities.

The 108-acre Washington Monument State Park contains the first monument dedicated to the memory of George Washington. The stone tower's construction began July 4, 1827; and involved roughly 500 inhabitants of Boonsboro, Maryland. The visitor center presents information on the natural and human history of the area, and the park regularly sponsors Civil War living history events.

The park offers exhibits and special events.

Rose Hill Manor Park and Children's Museum is a hands-on rural history museum designed specifically for elementary school students. Collection highlights include more than 20 historic carriages and sleighs. Displays include a historic kitchen, broom shop, and carpentry shop, as well as a steam tractor and information on pork butchering. The residence on site was completed in 1792.

The museum offers period rooms, exhibits, scout programs, and tours led by costumed interpreters. Tours meet state educational standards. Reservations are required for groups of 10 or more. The website offers pre- and post-visit activities.

The Calvert Marine Museum collects, preserves, and showcases the maritime history of southern Maryland, including the Patuxent River and Chesapeake Bay.

The museum offers exhibits on the people, culture, and environment of southern Maryland and the Chesapeake Bay; interpretive events and programs for students; in-class outreach presentations; and special events including lectures and performances. The website offers visitor information, a history of the museum, an events calendar, and a listing of all educational programs.

The Jerusalem Mill is over 228 years old, and operated continuously for two centuries. Today, the mill serves as the Gunpowder State Park headquarters and visitor center, and offers a variety of exhibits. In addition to the mill, visitors can also explore the surrounding village. Both the village and the mill are listed on the National Register of Historic Places.

The mill offers a variety of special events, including blacksmithing demonstrations and living history exhibits, and offers exhibits on park history. The website offers a brief history of the park and visitor information.

The mission of the all-volunteer Silver Spring Historical Society is to create and promote awareness and appreciation of Silver Spring's heritage through sponsorship of educational activities and the preservation and protection of historical sites, structures, artifacts, and archives.

The society offers walking tours of Silver Spring's Main Street, as well as tours of the B&O Railroad Station. The site offers past news regarding Silver Spring and the historical society, visitor information for the B&O Railroad Station, information on upcoming events, and an online gift shop.

"In 1800, Charles Carroll of Carrollton, a signer of the Declaration of Independence, offered his son a generous wedding gift — $10,000 to build and furnish a place in the country. Charles Carroll Jr. spared no expense and overlooked no detail in the construction of Homewood, an expression of his family's tremendous political, social, and financial stature. Visit today and experience the beauty and elegance of Homewood Museum — one of the nation's best examples of Federal Period architecture and a National Historic Landmark. Homewood Museum offers individual and group tours and a year-round calendar of changing exhibitions, concerts, and educational programs."

The site offers visitor information, an online museum shop, a history of the home, a virtual tour, an online audio tour, and an events calendar.

"Montgomery Preservation [...], Montgomery County's only county-wide, private, nonprofit historic preservation organization, was originally composed of a small group of local residents who formed the Montgomery County Committee of the Maryland Historical Trust in the early 1970's to further preservation efforts in the county." Today, the organization works to preserve local history on two fronts. First, the organization runs the mid-20th-century Silver Spring B&O Railroad Station, which is open to the public once a month during the summer and fall months. Second, the organization works toward encouraging preservation among local individuals and organizations.

The site offers visitor information for the B&O Station, information about preservation awards, information about current organization advocacy projects, and an events calendar.

Save Our Seminary at Forest Glen is a nonprofit organization founded to "combat the neglect of the unique, beautiful, and historic buildings and landscape of the National Park Seminary in Silver Spring, Maryland." To this end, the organization has worked tirelessly to restore many of the buildings in the seminary, and runs tours of the seminary for visitors from March through November. The seminary complex dates to circa 1887.

The organization offers tours. The website offers visitor information, an online store, a history of the seminary, and information on how to get involved.