oro ▁( s old ier ▁and ▁mart yr ▁of ▁Am ase a ▁in ▁Pont us ) ▁in ▁ 5 2 6 ▁AD . ▁Little ▁remains ▁of ▁the ▁original ▁church ▁after ▁its ▁reconst ruction ▁in ▁ 1 5 4 3 ; ▁some ▁histor ians ▁spec ulate ▁that ▁the ▁original ▁m osa ics ▁were ▁lost ▁over ▁a ▁thousand ▁years ▁earlier ▁during ▁its ▁Catholic ▁reconst ruction ▁due ▁to ▁A rian ▁them es . ▁ ▁During ▁this ▁same ▁period , ▁The odor ic ▁also ▁had ▁the ▁bapt istry ▁built , ▁today ▁referred ▁to ▁as ▁" of ▁the ▁Ari ans " ▁in ▁order ▁to ▁distinguish ▁it ▁from ▁the ▁Bapt istry ▁of ▁Ne on ▁( of ▁the ▁Orth odox ) ▁which ▁is ▁about ▁one ▁century ▁older . ▁ ▁Sh ape ▁and ▁structure ▁▁ ▁The ▁Bapt istry ▁is ▁oct ag onal ▁in ▁shape ▁with ▁some ▁little ▁a ps es ▁and ▁arch ed ▁open ings ▁near ▁the ▁top . ▁ ▁Al ong ▁the ▁external ▁per imeter ▁there ▁was ▁once ▁a ▁walk way ▁that ▁stopped ▁at ▁the ▁eastern ▁ap se . ▁ ▁Clear ly , ▁the ▁building ▁was ▁once ▁part ▁of ▁a ▁larger ▁complex . ▁▁ ▁Inside ▁are ▁four ▁nich es ▁and ▁a ▁d ome ▁with ▁m osa ics , ▁dep ict ing ▁the ▁bapt ism ▁of ▁Jesus ▁by ▁Saint ▁John ▁the ▁Bapt ist . ▁Jesus ▁is ▁shown ▁as ▁a ▁be ard less , ▁half - sub mer ged ▁in ▁the ▁Jordan . ▁John ▁the ▁Bapt ist ▁is ▁we aring ▁a ▁le op ard ▁skin . ▁On ▁the ▁left ▁stands ▁a ▁white