Coastal Florida was a major field of conflict as European nations fought for control in the New World. As part of this struggle, Fort Matanzas guarded St. Augustine's southern river approach. The colonial wars are over, but the monument is still protecting—not just the historic fort, but also the wild barrier island and the plants and animals who survive there amidst a sea of modern development.

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

Georgia's fate was decided in 1742 when Spanish and British forces clashed on St. Simons Island. Fort Frederica's troops defeated the Spanish, ensuring Georgia's future as a British colony. Today, the archaeological remnants of Frederica are protected by the National Park Service.

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

The Boston Harbor Islands Partnership is an umbrella organization representing the public access islands of Boston Harbor. Islands suggested for U.S. history studies include Deer, Thompson, Spectacle, Georges, and Little Brewster Islands. Topics relevant to the islands include Native American and settler relations, the King Phillips War (1674-1676), seacoast and harbor defense, navigational and lighthouse history, and the industrialization of Boston.

The site offers Junior Ranger activities and a GPS-based self-guided tour. The website offers an interdisciplinary guide for teachers; lesson plans, which focus on civic action, maritime history, settlement, and the Native American experience; thematic information on Native American life, geology, the Civil War, the Revolutionary War, ecosystems, and science and technology; and a list of island suggestions according to educational theme. The partnership's other offerings include a video, for rent, on five local Native American tribes; the Harbor Connections educational program; and educator professional development programming.

The Saint Croix Island international Historic Site commemorates the instigation of the European presence in northern North America. Pierre Dugua’s (c.1558-1628) French expedition spent the winter of 1604-1605 at this location, interacting with the Passamaquoddy people. Topics covered include the cultural interaction of the two distinct groups and historical events.

The site offers an outdoor interpretive shelter, wayside exhibits, a model of the 1604 French settlement, an interpretive trail, ranger talks, and Junior Ranger activities. Teacher workshops, a Saint Croix 1604 interpretive traveling trunk, and information on building or renting a Passamaquoddy Kit are also available.