The Palazzo Spada immediately catches the eye of the visitor to Rome, who moves from Piazza Farnese to Trastevere, thanks to its façade richly decorated with stucco decoration. Built in the mid-16th century for Cardinal Giacomo Capodiferro, the palace was purchased in 1632 by Cardinal Bernardino Spada, who immediately commissioned Borromini with some remodeling work. In the courtyard of the palace, Borromini realized one of his masterpieces: a gallery that was conceived so ingeniously in perspective that it appears to the viewer much longer than it actually is. Since 1927, the Palazzo Spada has been the seat of the State Council and the eponymous collection of important paintings from the 17th century, including Reni, Guercino, Carracci, Domenichino, Solimena, Preti, etc.