At Caesarea Maritima, visitors may see the high-level aqueduct at the point where it comes to an end likely due to erosion from the waves of the sea. According to Murphy-O’Connor the eastern channel (on the right) was “built by a Roman Procurator about the middle of the C1 AD.” The western channel was built by Hadrian. Some attribute the eastern channel to Herod the Great.
The next image is an aerial photo showing a long stretch of the high level aqueduct at Caesarea. You can also see the low level aqueduct a few yards inland (east). The low level aqueduct was built in the late 4th or early 5th century A.D.
Caesarea Maritima was a first century Roman capital and seaport. The gospel was first preached to the Gentiles here when Peter came from Joppa to Caesarea to tell Cornelius words by which he could be saved (Acts 10, 11).
The Apostle Paul used the harbor at Caesarea several times. He was imprisoned in the city for two years before departing for Rome (Acts 24:27; 27:1).