The Gate of Mazeus and Mithridates standing near the library provided entrance to the Mercantile Agora and has the form of an arch of triumph. Mazeus and Mithridates, who were slaves under the Emperor Augustus, were given their liberty, and in return they had built this gate in gratitude to the Emperor and his family. This gate was built in the 4th-3rd years BC. Ephesus, Turkey.