 In the Roman context it occurred in church buildings in Syria and occasional secular structures, like the Karamagara Bridge in modern Turkey.In Sassanid architecture parabolic and pointed arches were employed in both palace and sacred construction.A very slightly pointed arch built in 549 exists in the apse of the Basilica of Sant'Apollinare in Classe in Ravenna, and slightly more pointed example from a church, built 564 at Qasr Ibn Wardan in Roman Syria.