Classified for credit

Interactive center exploring food systems, agriculture, and farming technology — applied biology, nutrition science, and supply-chain economics.

Living-history farmstead demonstrating 19th-century Appalachian farming, craft trades, and rural domestic life in the SC upstate.

Washington's 1779–1780 winter headquarters in Morristown — primary-source Revolutionary War history and colonial military strategy within a National Historical Park.

Birthplace of the Model T Ford with preserved 1904 factory floor — covers early automotive manufacturing history, industrialization, and American labor history.

Living-history logging camp on the Mississippi headwaters — covers Minnesota timber industry history, forestry, and river ecology.

Underground garden system hand-carved by Sicilian immigrant Baldassare Forestiere — covers early-20th-century immigrant labor history and passive cooling engineering.

Large transportation museum with locomotives, cars, motorcycles, and aircraft — covers mechanical engineering history and industrial technology.

ND state park with Custer's reconstructed Fort Lincoln home and a Mandan earthlodge village — military and Plains-tribe history.

19th-century coastal fortification with guided tours covering military engineering, naval history, and America's Cup heritage.

Restored 19th-century coastal fortification in Newport — covers military engineering, coastal defense history, and the War of 1812 through WWII eras.

UNESCO World Heritage Hopewell Culture earthworks — covers Native American archaeology, pre-Columbian engineering, and Ohio Valley anthropology.

Reconstructed 1775 frontier fort — Daniel Boone, Kentucky settlement, and frontier life.

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

19th-century brick fort with living-history reenactors — covers Civil War coastal defense, military engineering, and Florida territorial history.

19th-century coastal fort with living-history programs and natural beach habitat — covers Civil War-era fortification engineering and coastal ecology.

Fort Collins hands-on discovery museum blending natural history and science exhibits — covers local ecology, earth science, and interactive STEM concepts.

Well-preserved frontier fort with original buildings and museum — covers post-Civil War Army history, Buffalo Soldiers, and westward expansion.

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

Barrier-island county park with Civil War fort, tidal flats, and Gulf Coast beach — ecology, coastal geography, and 19th-century military history.

Civil War-era island fort used as a Union prison — covers fortification design, prisoner-of-war conditions, and Delaware River military history.

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

Civil War–era fort on a Delaware River island — covers prisoner-of-war history, Civil War military operations, and mid-Atlantic geography.

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 visitor center and battlefield covering the 1862 Union capture of Fort Donelson — a pivotal Western Theater Civil War engagement.