In 1923 Escher arrived in Rome where he lived for twelve years, until 1935, at number 122 Via Poerio, in the old Monteverde Neighbourhood. The Roman period had a strong influence on all his subsequent work: landscapes, views, architecture and views of that ancient and baroque Rome that he loved to investigate in its most intimate dimension, the nocturnal one, in the dim light of a lantern. The nights spent drawing, sitting on a folding chair and with a small torch hanging from his jacket, are counted by Escher among the best memories of that period. 100 years after Escher's first visit to the Capital, the anthology underway at Palazzo Bonaparte presents the complete series of 12 "Roman nocturnes" produced in 1934 and some of his most famous masterpieces such as Hand with Reflecting Sphere (1935), Vincolo of Union (1956), Metamorphosis II (1939), Day and Night (1938), the famous Emblemata series.