Earlier this year, History Colorado's sprawling diorama of circa-1860 Denver was brought up from the basement, where it underwent a thorough cleaning and restoration, and placed in the lobby under special glass that will hopefully protect its Lilliputian landscape for years to come. The best part of that landscape? Tiny cats the size of ants who are perched on the Early Denver diorama's tiny fences, keeping an eye on the even tinier chickens.