John Baptistery of Poitiers, in western France, built about 350 C.E., is a good illustration of what a fourth - century “Christian ” baptistery looked like. Inside a rectangular room, surrounded by several annexes, was a large octagonal pool with three steps.
Lääne - Prantsusmaal Poitiers’s asuv Püha Johannese baptisteerium, mis ehitati umbes 350. aastal, on hea näide sellest, missugune nägi välja üks neljanda sajandi ristiusu kiriku baptisteerium.