Formally known as the "Denver Natural History Museum."
This South Denver museum was a field trip destination in elementary school, and I haven't visited for over a decade. I remember my 4th grade class had a sleepover night at the museum and we laid out our sleeping bags in these rooms with the dioramas. It was the BEST field trip EVER. Except for that annoying kid coughing and keeping everyone up all night.
I wish there was a display like this in Seattle, I can view the animals from all angles and could spend days here!