Classified for credit

Commercial cave tour through marble caverns — covers speleology, geology, mineral formation, and California Gold Rush-era history.

State museum dedicated to California's Gold Rush-era mining with mineral specimens and mining equipment — covers geology, mineralogy, and 19th-century extraction history.

California-native wildlife trail at Oakland Zoo featuring mountain lions, condors, and grizzlies — covers conservation biology and native ecosystems.

Large resort garden complex with native plant collections, butterfly center, and raptor program — covers botany, ecology, and wildlife biology.

Nature center and working planetarium — covers Florida native wildlife, raptor rehabilitation, and introductory astronomy.

Chesapeake Bay state park famous for exposed Miocene fossil beds on the beach — covers paleontology, geology, and Chesapeake Bay ecology.

Maine coastal state park with forested hills, ocean views, and developed trails — covers Maine ecology, coastal geography, and outdoor physical education.

Vermont state park on a prominent 4,083-ft peak with undeveloped wilderness trails — covers forest ecology, geology, and Appalachian mountain geography.

AZA-accredited zoo in Waco with strong conservation programming covering mammal, reptile, and bird species from multiple continents and Central Texas.

Living-history medieval village with costumed interpreters demonstrating 14th-century crafts and daily life — covers European medieval history and pre-industrial technology.

NPS visitor center at a major Civil War Union supply base and USCT training site — covers African-American Civil War service and Kentucky Unionist history.

WV high-elevation state park with diverse Appalachian ecosystems — covers boreal ecology, wetland biology, and Allegheny geography through trails and programs.

Undeveloped Atlantic barrier-island seashore with ranger programs covering coastal ecology, sea turtle nesting, and estuary biology.

Holocaust museum founded by twin survivors of Mengele's experiments — World War II history, genocide education, and human rights.

Private nature preserve in north Alabama with diverse canyon geology, waterfalls, and over 300 native plant species — supports ecology and botany.

NPS Creole heritage site on the Cane River — covers French Colonial, plantation, and free Creole of color history in Louisiana's antebellum society.

Outdoor living-history village with 30+ restored 19th-century structures illustrating Tennessee pioneer and small-town life.

Preserved 18th–19th century Shaker living-history village with working crafts and agricultural demonstrations — religious communal history and period technology.

Former McCormick estate with WWI museum, formal gardens, and grounds — covers early 20th-century American history and landscape design.

Drive-through safari park with exotic and native animals — covers zoology, animal behavior, and conservation of endangered species.

NPS-affiliated visitor center interpreting the largest concentration of Ancestral Puebloan archaeological sites in the U.S. — covers pre-Columbian history and Southwest archaeology.

Oregon coastal state park with cliffs, beach, and a historic lighthouse — covers Pacific Coast geography, wave erosion, and coastal ecology.

Space Force heritage museum covering military space operations, rocket technology, and the history of US launch programs at Cape Canaveral.

Washington state park at the Columbia River mouth with lighthouses, Lewis & Clark history, coastal ecology, and ocean geography field opportunities.