Classified for credit

French and Indian War-era stone fort with preserved earthworks and living-history programs — covers 18th-century colonial warfare and frontier diplomacy.

Massive antebellum masonry fort on a remote Gulf island — covers Civil War coastal defense, military engineering, and Dr. Mudd's imprisonment.

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.

Reconstructed French and Indian War fort with museum — covers 18th-century colonial warfare, frontier strategy, and Pennsylvania settlement.

Reconstructed 18th-century British fort on the Little Tennessee River covering colonial-era diplomacy, Cherokee relations, and French and Indian War history.

Restored 1780s British fort on Mackinac Island with costumed soldiers — covers frontier military history and the Great Lakes fur trade era.

Restored Civil War coastal fort within a state park — covers 19th-century fortification engineering, coastal geography, and military history alongside barrier-island ecology.

Reconstructed Lewis and Clark winter fort — covers the 1804–05 Corps of Discovery expedition, Native history, and westward exploration.

Civil War-era coastal fort on Ship Island accessible by ferry — covers Union blockade strategy, coastal fortification design, and Gulf Coast military history.

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

Civil War earthwork fort and museum on the Georgia coast — covers the Savannah campaign, coastal defense engineering, and Sherman's March to the Sea.

Preserved Civil War earthwork fort on the Ogeechee River with museum — coastal defense engineering, Sherman's March, and coastal ecology.

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

Reconstructed War of 1812 earthwork fort with living-history demonstrations — covers early American military history, Northwest Territory conflicts, and period tactics.

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.

Reconstructed 1800s Appalachian frontier settlement at Salem WV with period buildings and craft demonstrations — covers pioneer life and early West Virginia settlement.

Federal wilderness area along the Niobrara River supporting bison and elk herds — covers Great Plains ecology, wildlife biology, and river geography.

Reconstructed 1830s Hudson's Bay Company fur-trade fort with costumed interpreters — covers Pacific Northwest exploration, fur-trade economics, and Native-settler contact history.

Reconstructed 1808 US government trading post and fort — covers westward expansion, Lewis & Clark-era diplomacy, and Native American trade relations.

Interpretive center at Fort Peck Dam and Reservoir — paleontology exhibits, dam engineering, and Missouri River ecology.

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.