Classified for credit

Historic 1850s working farm with preserved buildings and agricultural demonstrations — covers Oregon pioneer settlement and 19th-century farm life.

National historical park at the site of John Brown's 1859 raid — covers Civil War causes, abolitionism, Reconstruction, and Appalachian geography.

NPS site preserving Harriet Tubman's Auburn home and AME Zion Church — abolitionist history, Underground Railroad, and women's suffrage.

NPS park preserving Tubman's birthplace landscape and Underground Railroad routes — primary-source abolitionist history, civil rights, and Maryland geography.

NPS-managed Truman family home and visitor center — primary-source Cold War presidency, 20th-century domestic life, and executive branch civics.

Presidential library and museum covering Truman's Cold War decisions, the Marshall Plan, and post-WWII American policy.

Harvard's research collection of over 21 million zoological specimens — supports taxonomy, evolutionary biology, and comparative anatomy.

Harvard's natural-history museum with mineralogy, zoology, and paleontology collections — applied taxonomy, geology, and evolutionary biology.

Underground tour of Havre's early-1900s subterranean businesses — covers frontier town history, immigrant labor, and early 20th-century commerce.

Hands-on science center in Bemidji — interactive exhibits cover biology, physics, and local natural history for K-12 learners.

Museum dedicated to Native American art and culture of the Southwest — covers Indigenous history, social studies, and material culture.

Guided tours of William Randolph Hearst's estate — covers Gilded Age architecture, art collecting, California history, and media-industry history.

Living-history village with restored 19th-century Ohio structures — covers pioneer domestic life, trade, and regional settlement history.

College-affiliated museum in Twin Falls with planetarium, anthropology, and natural-science collections — covers astronomy, archaeology, and regional natural history.

Factory tour and interactive attraction at Hershey showing cocoa-to-chocolate production — covers food science, manufacturing, and agricultural supply chains.

Living-history museum in Boone, NC re-creating 18th-century Appalachian frontier life with period demonstrations and costumed interpreters.

National Historic Landmark featuring a 205-foot carillon tower set in a formal garden — covers Florida history, landscape design, and American Arts and Crafts architecture.

Archaeologically active site of the first permanent English settlement in America — covers colonial history, archaeology methods, and early American civics.

Colorado's flagship state history museum with interactive exhibits spanning Native cultures, frontier settlement, and 20th-century Colorado.

NPS site marking the first free land claims under the 1862 Homestead Act — covers westward expansion, land policy, and 19th-century pioneer settlement.

NPS heritage center at the site of the first homestead claim — covers the Homestead Act, westward migration, farming history, and prairie ecology.

NPS site preserving Hopewell Native American ceremonial earthworks — primary-source archaeology, pre-Columbian cultures, and Ohio geography.

Restored 18th-century iron furnace complex with living-history demonstrations covering colonial iron production, industrial history, and metallurgy.

National park built around 47 thermal springs — covers geothermal geology, hydrology, and early federal conservation history.