Classified for credit

Indoor desert ecosystem exhibit at Milwaukee County Zoo featuring arid-climate flora and fauna — covers desert biome ecology, adaptation, and geography.

Largest wildlife refuge in the lower 48 — covers Mojave Desert ecology, bighorn sheep habitat, migratory birds, and land conservation biology.

Largest NWR in the contiguous US covering Mojave Desert habitat — supports desert ecology, wildlife biology, and Great Basin geography.

1932 Mary Colter-designed watchtower at Grand Canyon's South Rim — covers Ancestral Puebloan history, Southwest archaeology, and Native American cultural heritage.

Glass-enclosed desert biome exhibit at the Indianapolis Zoo — covers arid-zone ecology, desert adaptations, and biome science.

Alabama state park at Little River Canyon featuring waterfall ecology, forest biology, and stream geology with ranger-led programs.

Detroit history museum with exhibits on the auto industry, labor movement, and city development — supports US industrial and social history curriculum.

Only international wildlife refuge in the US covers migratory bird ecology, Great Lakes wetland biology, and US-Canada border geography.

Detroit Zoo's immersive African savanna station — animal behavior, conservation biology, and wildlife ecology with zoo educator programming.

Natural limestone cave system near Austin offering guided tours covering karst geology, speleothem formation, and cave ecosystems.

Iconic Gettysburg battlefield rock formation used by Confederate sharpshooters — primary-source Civil War military history and terrain study.

Ozark state park with sandstone bluffs, cave systems, and diverse Ouachita forest ecology ideal for geology and biology fieldwork.

Glacially formed quartzite bluff park with diverse ecosystems — supports geology, glaciation, plant ecology, and physical geography field study.

Florida sinkhole with a boardwalk descending 120 feet — teaches karst geology, sinkhole formation, and subtropical plant succession.

Natural limestone sinkhole hosting one of the world's largest Mexican free-tailed bat colonies — covers karst geology and mammal biology.

NPS monument featuring columnar basalt formations created by volcanic activity — covers geology, igneous rock formation, and geomorphology.

Iconic igneous rock formation and NPS monument — covers geology, volcanic intrusion, and Native American cultural history with ranger programs.

Colonial Williamsburg decorative-arts museum — material culture of 18th-century America through furniture, ceramics, textiles, and metalwork.

Volcanic tuff crater with interpretive trail and panoramic views — covers Hawaiian volcanology, geology, and coastal geography.

AZA-accredited zoo with Ozarks native species focus and active conservation programs — covers zoology, animal adaptation, and wildlife conservation.

Accredited zoo with diverse animal collection — supports zoology, conservation biology, and animal adaptation curriculum.

North Dakota dinosaur museum with fossil displays and paleontology exhibits — covers Cretaceous paleontology, geology, and the natural history of the Great Plains.

Federal wildlife refuge on Sanibel Island with wildlife drive and trails — covers shorebird ecology, wetland biology, and conservation biology.

Outdoor dinosaur-themed science park with fossil replicas and hands-on exhibits — covers paleontology, prehistoric life, and earth history.