Classified for credit

Major museum in Oklahoma City covering the history and culture of the American West, cowboys, rodeo, and Native peoples of the Plains.

Museum at the trailhead of the Oregon, Santa Fe, and California trails — westward migration, manifest destiny, and pioneer social history.

Dedicated U.S. Army infantry museum covering American military history from the Revolutionary War through present-day conflicts with artifacts and immersive exhibits.

Museum honoring inducted inventors with exhibits on the patent process, STEM careers, and landmark American inventions across technology and medicine.

Museum dedicated to jazz history in Harlem — covers African American cultural history, music theory, and the Harlem Renaissance.

NPS-managed complex of monuments, memorials, and green space along the National Mall — covers U.S. constitutional history, memorialization, and civic geography.

Smithsonian-affiliated museum on the Mississippi River covering river ecology, hydrology, towboat engineering, and the river's role in US history.

Museum in Frederick, MD dedicated to Civil War medicine — covers period surgical techniques, public health, and battlefield triage as primary-source history.

Large collection of military vehicles from WWII through modern era — covers 20th-century military history, engineering evolution, and US defense history.

Dedicated nuclear science and history museum covering fission, reactor design, the Manhattan Project, and Cold War weapons development.

DC museum dedicated to women artists across five centuries — supports art history, gender studies, and the history of women's contributions to visual culture.

Tropical rainforest national park in American Samoa — covers Pacific ecology, coral reef biology, and Polynesian cultural history.

Smithsonian museum housing the nation's official portrait collection — covers American history, government, and biographical study through portraiture.

Thirty decorated classrooms at the University of Pittsburgh representing world cultures — covers world history, immigration, architecture, and cultural geography.

State park centered on a 215-ft natural limestone arch — covers karst geology, regional ecology, and Virginia natural history.

Kentucky state park featuring a natural sandstone arch — covers geology, karst/arch formation, Appalachian ecology, and trail-based physical education.

NPS monument preserving three large natural sandstone bridges sacred to Hopi and Navajo — covers Indigenous cultural history and canyon geology.

Yosemite Valley nature center at Happy Isles covering Sierra Nevada ecology, river habitat, and wildlife biology with hands-on exhibits.

National Monument preserving 13th-century Ancestral Puebloan cliff dwellings — covers archaeology, Native American history, and Southwest geography.

Working railroad shop complex with restored locomotives and rolling stock — covers transportation history, industrial-age engineering, and railroad's role in U.S. expansion.

Dedicated museum preserving Negro Leagues baseball history — covers racial segregation, civil rights progress, and African-American cultural history.

National historical park centered on 19th-century whaling industry — maritime history, economics of the whale fishery, and period social history.

Living-history farm museum in NH covering 18th–19th century agricultural practices, animal husbandry, and rural New England life.

1.1-million-acre federal reserve protecting the unique Pine Barrens ecosystem — ecology, watershed science, and rare species biology with ranger programs.