Baptisteries

Baptisteries commonly adopted centralised plan forms derived from funerary chapels; and are invariably separate from the congregational basilica.

Baptisteries often occur in Italy as a free standing structure, associated with a cathedral.

Cathedral Basilica of Saint Louis Cathedral Basilica of Saints Peter and Paul in Philadelphia Baptisteries The baptistery in the Dura church was about 1m square and 1m deep; baptismal candidates could stand in it, but could not be immersed.

Other structures Among the structures associated with church buildings are crypts, porches, chapter houses, cloisters and baptisteries.