Classified for credit

Civil War siege battlefield with visitor center and ranger-led programs — covers military strategy, the Vicksburg Campaign, and the war's turning point in the Western Theater.

Caribbean national park with coral reef snorkeling, hiking trails, and ranger programs covering tropical ecology, marine biology, and geology.

Large marine science center and aquarium with live animal exhibits — covers marine biology, coastal ecology, and oceanography.

NPS fossil site preserving Columbian mammoth bones in situ — covers paleontology, Pleistocene ecology, and excavation methods with ranger-led tours.

Large urban park hosting the Oregon Zoo, Hoyt Arboretum, and Japanese Garden — ecology, botany, and Pacific Northwest geography in one visit.

Spectacular gorge state park with 19 waterfalls and layered geology — covers erosion, stratigraphy, hydrology, and physical geography.

Historic narrow-gauge railway through the White Pass used during the Klondike Gold Rush — covers 19th-century transportation history, Alaskan geography, and westward migration.

National park featuring 275 sq miles of white gypsum dune field — covers sedimentary geology, desert ecology, and mineralogy in a rare landscape.

275 square miles of gypsum sand dunes — covers mineralogy, desert ecology, aeolian geology, and unique plant and animal adaptations.

Major American art museum with permanent and rotating exhibits spanning 20th–21st century American art — supports art history and visual culture studies.

San Diego Zoo's immersive children's nature basecamp — hands-on animal encounters and habitat exploration supporting zoology, conservation, and ecology.

Large private zoo and aquarium with 600+ species — vertebrate zoology, conservation biology, and animal adaptation across diverse taxa.

One of the world's longest caves with boxwork spideleite formations and a surface bison prairie — geology, speleology, and ecology in one park.

Large conservation museum and aquarium featuring 35,000+ animals — covers aquatic biology, wildlife conservation, and vertebrate ecology across immersive galleries.

Woodland Park Zoo in Seattle — strong conservation programming covers zoology, animal behavior, and global ecosystems.

AZA-accredited Seattle zoo with active conservation and research programs — covers animal biology, global ecosystems, and endangered species recovery efforts.

Largest US national park — covers glaciology, volcanology, subarctic ecology, and wilderness geography across 13 million acres.

NPS site marking the 1903 first powered flight — covers aviation history, aerodynamics, and the engineering process.

Active paleontological dig site with lab and mounted skeletons — covers vertebrate paleontology, stratigraphy, and fossil preparation.

Yale's natural history museum with extensive fossil, mineralogy, and zoology collections — covers paleontology, evolution, and Earth science.

World's largest active geothermal area in a national park — covers geology, hydrothermal chemistry, wildlife biology, and ecosystem science.

UNESCO World Heritage Site featuring active geothermal features, diverse megafauna, and multiple ecosystems — geology, ecology, and conservation biology in one landscape.

Yellowstone National Park offers geothermal geology, wildlife biology, and ecology across multiple biomes with ranger-led education programs.

NPS battlefield where the American Revolution effectively ended — ranger-led programs cover Revolutionary War military strategy, diplomacy, and colonial history.