Classified for credit

Freshwater aquarium focused on Great Lakes ecosystems — covers fish biology, watershed ecology, and native species conservation.

Regional science museum with attached planetarium — covers earth science, astronomy, and physical science through exhibits and sky shows.

Urban freshwater and Great Lakes aquarium in Cleveland — covers aquatic biology, freshwater ecology, and Great Lakes conservation.

Green Bank Observatory hosts the world's largest fully steerable radio telescope — covers radio astronomy, electromagnetic spectrum, and data science.

World's largest fully steerable radio telescope with visitor center and guided tours — covers radio astronomy, physics, and engineering.

Working radio telescope observatory with science center exhibits — covers radio astronomy, electromagnetic spectrum, and the science of how telescopes collect data.

World's largest fully steerable radio telescope with guided tours — covers radio astronomy, electromagnetic spectrum, and astrophysics.

Marine park with dolphin and sea lion programs — covers marine mammal biology, animal behavior, and Gulf Coast ecosystems.

County environmental center with water-quality exhibits, wetland trails, and heritage displays covering watershed stewardship and local ecology.

National Monument preserving one of the world's richest Pliocene fossil sites — covers paleontology, stratigraphy, and the science of fossil excavation and identification.

Palomar Observatory's 200-inch Hale Telescope with public visitor gallery — covers reflecting telescope optics, astrophysics, and the history of observational astronomy.

High-altitude astronomical observatory atop Haleakalā — covers telescope operation, astrophysics, and atmospheric science in a working research setting.

Mid-level astronomy facility on Mauna Kea at 9,200 ft — covers observational astronomy, atmospheric science, and the logistics of high-altitude telescope operations.

World's largest firefighting equipment museum — covers fire suppression technology, engineering history, and public-safety science through 130+ vehicles.

Hands-on children's discovery center adjacent to Gray Fossil Site — paleontology, earth science, and natural history through interactive exhibits and fossil specimens.

Hands-on science center near Arnold Air Force Base — covers physics, engineering, and applied STEM concepts through interactive exhibits and experiments.

Working motorcycle manufacturing plant offering guided factory tours — covers assembly-line engineering, industrial manufacturing, and American labor history.

Harvard's research collection of over 21 million zoological specimens — supports taxonomy, evolutionary biology, and comparative anatomy.

Harvard's natural-history museum with mineralogy, zoology, and paleontology collections — applied taxonomy, geology, and evolutionary biology.

Nebraska regional museum with natural history, planetarium, and science exhibits — covers paleontology, astronomy, and Great Plains ecology.

Oregon State University marine science facility with public aquarium touch tanks and exhibits covering marine biology, oceanography, and coastal ecology.

NOAA-affiliated Oregon State University marine science visitor center with live tanks and research exhibits — marine biology, oceanography, and Pacific coast ecology.

Hands-on science and technology museum in Hilo focused on Hawaii's unique STEM context — covers earth science, astronomy, and indigenous technology.

Hawk Ridge is a premier raptor migration counting station on Lake Superior — covers ornithology, migration ecology, and citizen-science monitoring methods.