Santa Maria del Soccorso e San Filippo Neri a Castelporziano is a mediaeval parish church listed as being at Via Pontina 690, which is the address of the Tenuta Presidenziale di Castelporziano, a large forest and nature reserve on the coast south of the city.
The actual village is some distance to the south-west of this address, in the middle of a forest, and both parish and the district of Castel Porziano are wholly rural.
The original church was probably built in the 15th century by the Cistercian abbey of SS Thomas and Sabas. The Grazioli family acquired the castle and church in the 18th century, and sold the complex to the Italian Crown in the late 19th century. The property passed to the President of Italy after the abolition of the monarchy, hence the title of “Presidential Residence”.
The little church is part of the range of buildings on the south side of the west court of the residence, on a plan that is a transverse rectangle with a pedimented façade. There is a tiny external apse, in the outer wall of the residence. There is a campanile on the right hand side, a plain square stone tower with arched soundholes and a pyramidal cap.