The building, at present, has a facade marked by a double-inflected cornice and exposed masonry. It consists of a single nave, undoubtedly 17th-century, with internal pilasters intended to support the transverse arches of the roof, which remained interrupted at the level of the capitals. On the right side of the facade is an iron plaque placed by the Military Geographical Institute indicating Siliqua’s elevation at 66 meters above sea level and the inscription caposaldo di livellazione dell’Istituto Geografico Militare. It originally had a much more articulated structure that can be reconstructed through the 1761 inventory. “To the east of the Villa is the church dedicated to St. Sebastian, which consists of three naves of ordinary workmanship with a roof of boards and tiles, with two doors, a large one at the front and another small one on the epistle side. It is 42 wide, 42 long and 12 palms high. It has but an altar with its niche, stained glass and veil, and a retable; in this are painted a Holy Christ, St. Sebastian and St. Juliana, and in the niche there is an image of the said St. Sebastian; whose feast is celebrated on January 20, and the third Tuesday in September at the expense of the Community.” The canopy still existed in the early twentieth century.