Images Archaeological Museum of Milan. View of the museum garden with the Polygon Tower and the remains of the Roman city walls (IV century A.D.) Reconstruction of the city walls and the Circis tower (IV cenury A.D. - detail) Polygon tower inner wall, with the remains of the XV century monastery frescoes

In the museum gardens a tower is conserved, tied to a line of walls that back in time surrounded the city. It was emperor Maximian that, at the end of the III century A.D., decided to enlarge the city walls, in which an extraordinary polygonal tower, with 24 faces, was included. Frescoes can still be seen in its inner walls, dating back to the XV century, when the tower was transformed into a chapel inside the monastery.