This is a mode of promotion that uses scale to its advantage... and it works both ways. It's very affordable now, with digital printing, to "explode" marketing materials to sizes that attract attention at trade shows and events, using larger-than-life, colorful images and type to draw in interested "shoppers". It's super effective and has a terrific return-on-investment. So it follows that traditional banners (with almost no size limitations) and retractable banner stands (upwards of 8ft.) have become a driving force in outdoor and large-venue marketing, along with full-out, room-sized displays with lights and work stations built in. Splendid investments if you're taking the show on the road.
In the reverse of that idea, you can take a large-scale concept that's comprised of multiple enterprises or many elements, and put them in context with each other to show that they work together as a whole. In this exhibit approach (used for display cases), the elements are scaled down to make them fit into a comprehensible area that's still large, compared to most advertising mediums. Complex relationships between businesses are easier to organize, mentally. Glass display cases are sometimes hard to take advantage of, but a diorama is an old-school way to exploit the space using 2-dimensional images to imply depth. Incorporating an actual 3-D element or two is a helpful trick.