Classified for credit

Restored 1830s C&O Canal lockkeeper's house in Washington DC — illustrates 19th-century canal commerce, infrastructure, and the role of the waterway in early American trade.

Research museum at Dumbarton Oaks with pre-Columbian and Byzantine art collections — covers ancient and medieval art history and material culture.

Rooftop observatory near Capitol Hill offering views of Washington DC — covers urban geography, architecture, and basic observational astronomy.

Federal-period house in DC where the Treaty of Ghent was signed — primary-source architectural and early American political history.

Preserved home of the 28th president — covers Progressive Era politics, WWI diplomacy, and early 20th-century domestic life.

Museum and library at Anderson House covering the Revolutionary War era and diplomatic history of the early republic.

Iconic memorial to Thomas Jefferson on the National Mall — covers Founding-era political philosophy, the Declaration of Independence, and civic architecture.

Urban wetland conservancy in NW Washington DC — supports study of freshwater ecology, native riparian plant communities, and urban conservation management.

Federal-period Georgetown mansion linked to the Custis-Peter family — covers early American social history, architecture, and Washington DC's founding-era domestic life.

Iconic 555-foot obelisk on the National Mall — covers 19th-century engineering, civic monument history, and the presidency of George Washington.

Outdoor grounds surrounding the Washington Monument — American history, civic symbolism, and the politics of the National Mall.

Active Gothic cathedral and National Cathedral — covers American religious history, Gothic architecture, and civic symbolism.

National Mall parkland bordering the Tidal Basin with famous cherry trees and war memorials — PE and nature observation with incidental history context.

NPS-operated visitor center with exhibits on presidential history, the executive branch, and the architecture and function of the White House.

Federal exhibit center at the Woodrow Wilson Plaza covering Wilson's presidency, WWI, and the League of Nations — 20th-century political history.

National WWI memorial on the National Mall — covers U.S. involvement in World War I, sacrifice, and 20th-century global history.

NPS-managed parks surrounding the U.S. Capitol — covers federal government, civics, and the architectural history of Washington, DC.

Restored 1903 Carnegie Library building in DC — covers the history of public libraries, literacy movements, and Gilded Age philanthropy.

Museum documenting German immigration and cultural contributions to the United States — supports immigration history and social-studies standards.

Formal urban park in Washington DC featuring a cascading fountain — limited structured curriculum content; some historical significance as a gathering site.

Restored 1891 Korean diplomatic legation — covers late 19th-century Korean-American diplomatic history, the Joseon Dynasty, and U.S. foreign relations.

19th-century farmstead within Rock Creek Park — covers Washington DC agricultural history, early settlement patterns, and landscape history.

Gilded Age mansion used as a historic house museum — covers late-19th-century political and social history and Beaux-Arts architecture.