Romans didn’t invent the arch, but they sure did perfect it. With a reverence for the Greek architectural order of things, Roman architects built upon that knowledge and took it even further, advancing the technology. Their new arch techniques allowed the construction of aqueducts, coliseums, basilicas, and amphitheaters without the fear of them collapsing. Not only have many of these structures lasted for thousands of years, but the techniques are still in use today.