The marvels of Roman public architecture and hydraulic engineering are explored in a show that looks at the structure of amphitheaters such as the Colosseum. A little known feature of these amphitheaters is that they were originally roofed by canvas covers that were retracted when the arena was not in use. But how did the Romans devise a mechanism as tricky as a huge retractable roof? Our team of archaeologists and engineers will tackle the problem that the ancient Romans solved in one of the most striking examples of that civilization's ingenuity.
