Classified for credit

Omaha's history museum housed in a restored 1931 Art Deco train station — covers Great Plains, railroad, and immigrant settlement history.

Preserved narrow-gauge railroad with operating steam locomotives — covers 19th-century industrial history, rail engineering, and Appalachian heritage.

Heritage electric railway with operable vintage interurban cars — covers railroad history, electrical engineering basics, and regional transit development.

National Monument preserving 200+ prehistoric Native American effigy earthworks — covers archaeology, Indigenous cultures, and Mississippi River geography.

Eisenhower's retirement home and working farm in Gettysburg — covers WWII leadership, Cold War presidency, and 1950s American political history.

NPS sandstone mesa with Spanish and Pueblo inscriptions dating to 1605 — covers colonial-era exploration, Indigenous history, and epigraphy.

Living-history ranch near Santa Fe depicting 18th-century Spanish Colonial life in New Mexico — covers settlement, agriculture, and Southwest heritage.

Maritime museum on Presque Isle Bay featuring the brig Niagara — covers naval history of the War of 1812, ship construction, and Great Lakes commerce.

Mississippian-era archaeological site with preserved earthwork mounds and a museum covering pre-Columbian Native American civilization.

Site of Washington's first inauguration and early US Congress — primary-source civics, constitutional history, and the founding of federal government.

Home of the reconstructed US Brig Niagara — covers War of 1812 naval history, 19th-century sailing technology, and Great Lakes maritime heritage.

National memorial to the 40 passengers who thwarted the 9/11 hijacking — covers modern U.S. history, civic courage, and primary-source analysis.

NPS reconstructed fort marks the Lewis and Clark Expedition's 1805–06 winter quarters — covers westward exploration, Corps of Discovery, and Pacific Northwest history.

Preserved frontier Army post illustrating post-Civil War military history, Buffalo Soldiers, and westward expansion in the Trans-Pecos.

Civil War-era island fort used as a prison camp — covers Union military engineering, prisoner-of-war conditions, and Delaware Bay history.

Civil War battlefield where Union forces captured a Confederate fort in 1862 — NPS ranger programs cover military strategy and the western theater of the war.

NPS-managed frontier Army fort on the Oregon Trail — covers westward expansion, U.S.-Native relations, and 19th-century military life.

Preserved 1860s frontier Army fort on the Santa Fe Trail — covers Plains Indian conflicts, westward expansion, and military history.

NPS fort site accessible by boat tour — Spanish colonial military history, the 1740 Matanzas Inlet massacre, and 18th-century coastal defense.

Star-shaped 1812-era fort where the bombardment that inspired the national anthem took place — War of 1812 and U.S. civic history.

Reconstructed 18th-century French and British fur-trade fort with living-history interpreters — colonial conflict, Great Lakes trade networks, and frontier life.

National monument preserving one of the oldest continuously active US Army posts — covers Civil War, Reconstruction, and coastal defense history.

NPS-managed Civil War–era brick fort beneath the Golden Gate — covers coastal defense history, military engineering, and the Civil War.

Civil War-era masonry fort where Union rifled artillery breached brick walls — covers military engineering, Civil War history, and coastal fortification design.