Durer's Melancholia is world famous for its magic square on the top right wall.
It is a real magic square because it contains the integers 1,2, ..., 16 on 4x4 places. The constant of this magic square is 34. I have been thinking if there are any 'beautiful' ways in decomposing it into two or more (magical) squares. Best I have come up sofar are two squares with constant number 17.
Add them and the result is Drurer's magic square.