The Arch of Hadrian in Jerash, Jordan is a cool ancient Roman structure that was built to honor Emperor Hadrian's visit in 129-130. It's like this 11-meter high gateway with three arches and some funky architectural features. They did some restoration work on it in 2005, and now it stands about 21 meters tall. The arch has columns, Corinthian capitals, and niches – pretty fancy stuff for back in the day. Overall, it's a neat piece of history that shows off the grandeur of ancient Gerasa.