The word diorama can refer either to a nineteenth century mobile theatre device, or, in modern usage, a three-dimensional model, usually enclosed in a glass showcase for a museum. Daguerre's Diorama The Diorama was a popular entertainment in Paris, England, Scotland, and Ireland from 1822 to 1880. An alternative to the also popular "Panorama" (panoramic painting), the Diorama was a theatrical experience viewed by an audience in a highly specialized theatre. As many as 350 patrons would file in… (More on Dioramas)