The gate beside the library is a three-arch gateway in the style of Roman
victory monuments. Rich friezes are on the three sections above the plaster
supports between doorways. The upper portion is in Attic style. There are
two niches in each of the side openings.
Mazeus and Mithridates were slaves of Emperor Augustus who, upon manumission, received permission from their former master and built this lovely archway dedicated to Augustus, his wife Livia, and daughter Julia and her husband just a few years before Christ.