Performing Whales are our idea of an aquarium today, but 100 years ago, much more modest displays filled with the wonders of the deep were state of the art. The Aquarium at Belle Isle in Detroit has been restored and reopened. It is really quite amazing. The building, with mostly original tile work is a masterpiece. The displays are nice sized and there are a lot of them. All of that green tile ceiling, how did they do that?