It was the center of their universe. And it was called the 'hydraulic city' because it had really remarkably massive arrays of barays, which are these giant water tanks and a series of canals and interconnected waterways that was really unparalleled in the ancient world in that part of the world."

VOA: standard.2010.04.05

It's halfway up Mount Parnassus and it was thought by the Greeks to be the Omphalos, the navel of the universe, the center in every way. Why?

它坐落在帕尔纳索斯山半山腰上,希腊人称它为Omphalos,是世界之脐,即世界的中心,为什么呢

耶鲁公开课 - 古希腊历史简介课程节选