Plan of the subterranean chapel, called Confession, under the high altar of Sta. Praxeda, at Rome, part of the habitation of the saint.
General plan of the Church of Sta. Praxeda, at the Baths of Noratus, in the Vicus Lateritius, near Sta. Maria Maggiore, with the court in front, and the staircase by which it is reached.