Colorado

A glowing yellow crystal is nestled among dark blue crystals on a blue base.

Fluorescent minerals on display at Colorado School of Mines Geology Museum

Fluorescent minerals on display at Colorado School of Mines Geology Museum

A glowing sphere with green and red patterns, surrounded by blue and yellow luminescent minerals, against a dark background.

Fluorescent minerals on display at Colorado School of Mines Geology Museum

A modern building with red and beige walls, large windows, and a curved roof under a partly cloudy sky.

Colorado School of Mines Geology Museum

A butterfly with brown wings speckled with white spots on a green leafy branch.

Parthenos sylvia at Butterfly Pavilion

A valley contains two lakes, flanked by steep, rocky slopes under a cloudy sky.

Chicago Lakes in Mount Blue Sky Recreation Area

A small stone building stands in front of a rocky hillside under a cloudy sky.

Summit Lake Park Shelter in Mount Blue Sky Recreation Area

A landscape featuring mountains, forested hillsides, a lake, and a blue sky with clouds.

Idaho Springs Dam

A dark pinecone displays numerous viscous droplets on its scales, and green needles extend from the lower right.

Bristlecone pine cone in Mount Goliath Natural Area

A pink lotus flower with yellow stamens is next to a white lotus flower with red stamens.

Lotus flowers at Denver Botanic Gardens

White water lilies float on dark water surrounded by large green leaves with serrated edges.

Water lily at Denver Botanic Gardens

A dragonfly rests on a green leaf against a dark background.

Great Spreadwing at Denver Botanic Gardens

A cluster of pink star-shaped flowers grows among tightly packed green succulent leaves.

Common houseleek at Denver Botanic Gardens

An open white water lily flower with yellow stamens is surrounded by green leaves and buds, floating on dark water.

Water lily at Denver Botanic Gardens

Two bighorn sheep stand on a rocky outcrop under an overcast sky.

Bighorn sheep in Mount Blue Sky Recreation Area

A mountainous landscape under a cloudy sky with sunlight streaming through gaps in clouds.

Sunset over Mount Blue Sky

A rocky mountain peak with patches of vegetation overlooking a calm lake.

Mount Bierstadt and Abyss Lake Scenic Area

A rocky landscape atop a mountain peak, with distant mountains and a clear sky.

Mount Evans Scenic Byway and Rogers Peak seen from Mount Blue Sky

A red two-story house with a white door and window frames, surrounded by grass and trees, under a partly cloudy sky.

A playground with a colorful slide and climbing structures set against a backdrop of trees and a clear sky.

A tan-brick building with glass windows and street lamps in front of it.

Echo Park at sunrise in Dinosaur National Monument

A large sand dune under a blue sky.

Sand dune at Great Sand Dunes National Park

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