The Arco Felice was a 20 m high monumental entrance to the city built in a cut through Monte Grillo which Domitian made in 95 AD to avoid the long detour imposed by the via Appia, and allow easier access to Cumae along what was later called the via Domitiana while the bridge also carried a road along the ridge of the hill. It was built of brick and tiled in marble, and surmounted by two rows of arches of lighter concrete covered with brick. The piers had three niches on both sides where statues were placed.