Classified for credit

NHP preserving the cradle of the American Industrial Revolution — water-powered textile mills cover early manufacturing, labor history, and engineering.

West Virginia state park anchored by a 65-foot waterfall in a mixed hardwood canyon — geology, forest ecology, and watershed study with developed trails.

AZA-accredited zoo in Des Moines with conservation programming — supports zoology, animal biology, and wildlife conservation curricula.

Coastal marine science center on the NH seacoast with interactive exhibits on ocean biology, tidal ecology, and Gulf of Maine conservation.

469-mile scenic parkway through the Appalachians offering geology, forest ecology, and Appalachian cultural history via ranger programs and visitor centers.

Indoor aquarium featuring freshwater and marine species — covers aquatic biology, ecosystems, and animal adaptations.

Federal wildlife refuge on the Delaware Bay flyway — supports migratory bird biology, wetland ecology, and waterfowl conservation studies with observation towers and trails.

Abandoned lead mine with underground tours covering geology, mining engineering, ore extraction history, and Missouri's industrial past.

Working federal hydroelectric dam with adjacent fish hatchery — covers electricity generation, fish biology, aquaculture, and Columbia River ecology.

Living-history museum in Dodge City depicting 1870s–1880s cattle-trail era — covers Westward expansion, frontier justice, and post-Civil War Great Plains settlement.

National and state park island chain in Boston Harbor — covers coastal ecology, tidal zones, and 19th-century harbor fortification history.

Museum in Boulder City documenting the construction and engineering history of Hoover Dam — pairs with a dam tour for civil engineering and Depression-era history.

Vanderbilt Gilded Age mansion in Newport — covers late 19th-century American economic history, architecture, and the rise of the industrial elite.

AZA-accredited municipal zoo with over 1,800 animals and active conservation programs — covers zoology, ecology, and wildlife biology in a hands-on outdoor setting.

Outdoor sculpture garden and wildlife preserve with native plant collections and wetland habitats — supports botany, ecology, and art history in a single visit.

NPS site at the school where Brown v. Board of Education began — civil-rights history, constitutional law, and 20th-century social-studies context.

First U.S. national river with undeveloped Ozark corridor — covers river ecology, geology, and riparian biology with ranger-led programs.

Bullock Texas State History Museum with extensive exhibits on Texas history from prehistory through modern era — Texas and US history with primary-source artifacts.

University natural history and culture museum with Pacific Northwest fossils, geology collections, and archaeological exhibits — strong paleontology and earth science hook.

American Airlines aviation museum with full-size aircraft — covers aeronautical engineering, the history of commercial flight, and aviation technology.

NPS monument marking Cabrillo's 1542 landing — covers Age of Exploration, Pacific Coast ecology, and tide pool biology.

Preserved 19th-century Appalachian settlement loop inside Great Smoky Mountains NP — pioneer history, subsistence farming, and mountain ecology.

Commemorative Air Force Southern California wing with restored WWII aircraft — aviation history, aeronautical engineering, and wartime social history.

UNESCO World Heritage Site featuring Mississippian earthen mounds occupied 700–1400 CE — pre-Columbian archaeology, Native American history, and anthropology.