The Marine Gate belongs to the city walls of the first century BC. It received its modern name from the nearby beach. The gate was excavated in 1938-1942.
Plan of the gate. SO I, fig. 28.The gate consists of a single room, made of large tufa blocks. On the south side are grooves for the wooden doors. Pivot-holes have also been preserved. On either side of the gate is a square tower, with sides of 4.40 to 4.50 metres. In the first century AD the gate was razed to the ground. In the years 210-235 AD the Bar of Alexander and Helix (IV,VII,4) was built on the east side. As a replacement an arch decorated with marble was built, five metres to the south, of which few remains were found. Between the gate and the arch a mediaeval lime-kiln was found.
