Apollonia ( the Cyrene port active from 7th century B.C ), takes it's name from it's protector the God Apollo. At that time a port of great importance because of its position on the sea it was less exposed than the inland towns( like Cyrene ), to the attacks of the indigenous population, the Libi. It's name was changed to Sozousa ( The Saviour ), probably deriving from the worship of a so called God there which is where it's modern day name Susa comes from. Most of the monuments today visible date to the Roman Imperial and Byzantine time, there is still little of the Greek town uncovered. ( The most part being immersed under the sea.), When the town was hit by violent earthquakes in 365 and 400 A.D many of the Roman buildings were destroyed giving the architects of the 5th century A.D the materials( columns, pillars and blocks of stone etc ), to reuse for the new constructions ( in particular to build places of worship, basilicas ).