Classified for credit

Civil War battlefield with NPS visitor center, cyclorama, and ranger-led programs — covers military strategy, the turning point of the war, and Reconstruction.

NPS visitor center for the decisive Civil War battle — covers military strategy, Union-Confederate political causes, and Reconstruction through films, cyclorama, and artifacts.

Gibbon Ridge is part of the National Zoo grounds in Washington, DC — animal behavior, zoology, and conservation biology in a world-class setting.

UNESCO World Heritage Site and national park with tidewater glaciers — covers glaciology, marine ecology, and Pacific coastal geography.

National park and UNESCO World Heritage Site — tidewater glaciology, marine ecology, and coastal geography with ranger-led programming.

National park with active glaciers, alpine ecosystems, and ranger-led programs covering glaciology, ecology, and Rocky Mountain geography.

NPS recreation area spanning bay, coast, and redwood habitats — covers ecology, coastal geography, Civil War fortifications, and outdoor fitness.

One of the world's great geologic wonders — covers erosion, stratigraphy, river systems, and ecology across 277 miles of canyon.

Grand Coulee Dam visitor center — fluid dynamics, hydropower generation, and Depression-era civil engineering of the largest US concrete structure.

National park featuring the Teton Range, Jackson Lake, and diverse wildlife — covers geology, ecology, and Rocky Mountain geography.

Active paleontological dig site with museum — covers vertebrate paleontology, Miocene ecology, and scientific excavation methods using real fossil specimens.

Remote Great Basin NPS unit with Lehman Caves, ancient bristlecone pines, and a dark-sky program — covers geology, ecology, and astronomy.

NASA Glenn-affiliated science center on Lake Erie with hands-on STEM exhibits and the only NASA Glenn visitor center — covers aerospace, energy, and engineering.

National park featuring North America's tallest sand dunes — covers aeolian geology, hydrology, and high-desert ecology with ranger programming.

UNESCO World Heritage site and one of the most biodiverse temperate forests in North America — covers ecology, geology, and Appalachian natural history.

Heritage excursion railroad through the Nantahala Gorge — covers Appalachian railroad history, mountain geography, and the role of rail in regional development.

Living-history village with 80+ historic structures and working demonstrations — covers American industrial history, innovation, and daily life from colonial through early 20th century.

Regional science center combining aquarium, zoo, and planetarium — covers zoology, marine biology, astronomy, and conservation.

Chicago's Museum of Science and Industry offers hundreds of hands-on exhibits covering physics, chemistry, engineering, technology, and applied math.

Public observatory with telescopes, a planetarium, and exhibits on astrophysics — covers astronomy, optics, the solar system, and the physics of light.

Public observatory and planetarium on Griffith Park hill — covers astronomy, optics, earth science, and the physics of the solar system.

Large urban park housing Griffith Observatory, an astronomy museum, and nature trails — supports astronomy, earth science, and ecology across multiple venues.

Remote national park exposing ancient Permian reef geology and Chihuahuan Desert ecology — covers stratigraphy, desert biology, and physical geography.

Active shield volcano summit and crater in a national park — covers volcanology, atmospheric science, Hawaii ecology, and high-altitude biology.