The Arch of Hadrian is an ancient Roman structure in Jerash, Jordan. It is an 11-metre high triple-arched gateway erected to honor the visit of Roman Emperor Hadrian to the city in the winter of 129–130. The arch originally stood to almost 22 m and probably had wooden doors. It features some unconventional, possibly Nabataean, architectural features, such as acanthus bases. The monument served both as a commemorative arch and as an approach to Gerasa. The Arch's relative remoteness from the city walls points to a plan for southward expansion of Gerasa during its heyday. The expansion, however, was not implemented.