Classified for credit

Ranger-guided tour of a preserved Ancestral Puebloan cliff dwelling at Mesa Verde — covers Native American history and archaeology.

National park featuring one of North America's deepest gorges — geology, erosion, plate tectonics, and riparian ecology with ranger programs.

Accredited zoo set at 6,800 ft elevation with strong conservation programs — covers zoology, animal adaptations, and wildlife conservation biology.

Large hands-on children's museum — covers early STEM concepts, literacy, creative arts, and social skills through structured play-based exhibits.

Ancestral Puebloan cliff dwelling in Mesa Verde NNP with ranger-led tours — covers pre-Columbian history, archaeology, and Southwest Native cultures.

Narrow-gauge heritage railroad through the San Juan Mountains — covers railroad history, westward expansion, and high-altitude Rocky Mountain geography.

Major Denver art museum with encyclopedic collection spanning Native American, Western American, and global art — substantial publicly accessible exhibits.

Major natural history and science museum with exhibits in geology, paleontology, space science, and anthropology.

Large accredited zoo with strong conservation programs covers vertebrate zoology, animal adaptation, and global ecosystems across 80+ acres.

Paleontology museum on the Jurassic-rich Colorado Plateau with fossil casts, working lab, and excavation site access.

National Monument with in-situ dinosaur fossil quarry and ranger programs — covers paleontology, geology, stratigraphy, and Jurassic-era natural history.

Historic narrow-gauge steam railroad running through the San Juan Mountains — covers railroad engineering history, Colorado mining era, and mountain geography.

Narrow-gauge heritage railroad with gold/silver mine tour — covers Colorado mining history, ore extraction, and 19th-century industrial technology.

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

UNESCO World Heritage cliff dwellings — covers Ancestral Puebloan archaeology, Southwest Native American history, and cultural geography.

Ancestral Puebloan cliff dwellings at a UNESCO World Heritage Site — covers pre-Columbian archaeology, Native American history, and Colorado Plateau geography.

Summit visitor center atop a 14,115-ft Fourteener — covers geology, alpine ecology, meteorology, and high-altitude physiology.

Colorado national park featuring alpine ecosystems, tundra habitats, and ranger programs covering geology, wildlife biology, and high-altitude geography.

Outdoor adventure play campus attached to Denver's children's museum — supports physical development, imaginative STEM play, and early literacy through structured exhibits.

Historic gold processing mill and mine tunnel with guided tours — covers hard-rock mining methods, ore chemistry, and Colorado mining history.

Reconstructed 1840s adobe fur-trade fort on the Santa Fe Trail with living-history interpreters covering westward expansion, trade economy, and Plains cultures.

Reconstructed 1840s adobe fur-trade fort on the Santa Fe Trail — mountain man culture, westward expansion, and US–Mexico trade history.

Hand-built stone castle constructed by one man over decades — covers folk architecture, self-reliance, and the history of the American DIY tradition.

Live butterfly conservatory with emergence chamber and invertebrate exhibits — covers insect life cycles, entomology, and pollinator ecology hands-on.