This gothic style cathedral was built largely between 1366 and 1485. Cassola asked for blessings at the Cathedral before he left.
Cassola:
On the 14th of the month of May of the present year, which was a Wednesday, and the third day of the Rogations or Litanies, according to the Ambrosian ritual (Note 1), when the service was ended in the Cathedral Church of Milan (Note 2), in the presence of the people not a few, I went up to the high altar, where the most Reverend Lord, Don Guidantonio Arcimboldi, the most worthy Archbishop of Milan, stood, according to custom, to bless the people. And I begged his most Reverend Lordship to bless the emblems of my pilgrimage -- that is, the cross, the stick or pilgrim's staff, and the wallet -- and to bestow his blessing on me, according to the order and the ancient institution to be found written in the pastoral. Notwithstanding that he was very weary, because of the long office of the said Litanies, the said most Reverend Lord blessed me very graciously and with great solemnity in the sight of all the people, and gave me the emblems of my pilgrimage.