The entrance to the Gallery gives onto Piazza di Spagna. From the doorway to number 4, a concealed courtyard leads the visitor into the secluded rooms of a historical 17th century palazzo housing old masters (primarily of Italian schools), sculptures, marbles, semi-precious stoneworks and rare objets d'art. Most of the artworks on display come from private collections. The Galleria Alessandra Di Castro also assist its customers with purchases or sales and to provide art historical research, estimates and expertises; it is also available for consultation in matters relating to collections and inheritance.