Poitiers - St Jean

A little way south of the Cathedral, in Rue Jean-Jaurès, is the Baptistery of St-Jean, probably the oldest surviving Christian building in France. Built in 356-368 on Roman foundations, it was enlarged in the seventh and 11th C. by the addition of an apse and a porch. It has frescoes of the 11th-14th C., and now houses an archeological museum.