Propylæa, in Greek architecture, a grand portal or state entrance.
Prothyrum, in a Roman house, the porch or entrance.
Pseudo-peripteral, resembling, but not really being peristylar.
Pylon, or Pro-Pylon, the portal or front of an Egyptian temple.
Quadriga, a four-horse chariot.
Romanesque, the style of Christian architecture which was founded on Roman work.
Rotunda, a building circular in plan.
Sacristy, the part of a church where the treasures belonging to the church are preserved.
Shinto Temples, temples (in Japan) devoted to the Shinto religion.
Span, the space over which an arch or a roof extends.