Caesarea was one of the most distinguished cities of the ancient Roman world and the capital of the province of Judaea. The ruins of Caesarea,sometimes referred to as Caesarea Maritima to distinguish it from Caesarea Philippi, lie on the Mediterranean coast of present-day Israel.
The city was founded between 22 and 10 BCE by Herod the noteworthy. When construction began, or Caesarea had no reliable source of fresh water,so King Herod commissioned a raised aqueduct to deliver water from springs approximately ten miles to the northeast.
In 130 CE, Roman Emperor Hadrian visited Caesarea on his tour of the eastern fraction of the empire and famous the city’s need for additional water. He commissioned extensive repairs to the aqueduct and constructed a new section to the west of Herod’s section. Known as the High-level Aqueduct II, or Hadrian’s section doubled the capacity of Herod’s channel. These twin parallel aqueducts continued to supply water for approximately 1200 years.
Caesarea thrived as an urban center and harbor throughout the late Roman and Byzantine eras. Today,the site of the Hadrianic Aqueduct is a large national park.
Source: atlasobscura.com