▁The ▁T bil isi ▁S ioni ▁C athedral ▁is ▁situated ▁in ▁historic ▁S ion is ▁K ucha ▁( S ioni ▁Street ) ▁in ▁dow nt own ▁T bil isi , ▁with ▁its ▁eastern ▁fa ç ade ▁front ing ▁the ▁right ▁emb ank ment ▁of ▁the ▁K ura ▁River . ▁It ▁was ▁initially ▁built ▁in ▁the ▁ 6 th ▁and ▁ 7 th ▁centuries . ▁Since ▁then , ▁it ▁has ▁been ▁destroyed ▁by ▁foreign ▁inv aders ▁and ▁re construct ed ▁several ▁times . ▁The ▁current ▁church ▁is ▁based ▁on ▁a ▁ 1 3 th - century ▁version ▁with ▁some ▁changes ▁from ▁the ▁ 1 7 th ▁to ▁ 1 9 th ▁centuries . ▁The ▁S ioni ▁C athedral ▁was ▁the ▁main ▁Georg ian ▁Orth odox ▁C athedral ▁and ▁the ▁seat ▁of ▁C athol icos - Pat ri arch ▁of ▁All ▁Georgia ▁until ▁the ▁Holy ▁Tr inity ▁C athedral ▁was ▁consec r ated ▁in ▁ 2 0 0 4 . ▁ ▁History ▁ ▁According ▁to ▁medieval ▁Georg ian ▁ann als , ▁the ▁construction ▁of ▁the ▁original ▁church ▁on ▁this ▁site ▁was ▁initi ated ▁by ▁King ▁V ak ht ang ▁G org as ali ▁in ▁the ▁ 5 th ▁century . ▁A ▁hundred ▁years ▁later , ▁Gu aram , ▁the ▁prince ▁of ▁I ber ia ▁( K art li ), ▁in ▁c . ▁ 5 7 5 ▁began ▁building ▁a ▁new ▁structure , ▁which ▁was ▁completed ▁by ▁his ▁successor ▁Ad arn ase ▁in ▁circa ▁ 6 3 9 . ▁According ▁to ▁legend , ▁both ▁princes ▁were