You're in luck this weekend! "Chiostro in fiera" (Trade Fair in a Courtyard...my, my, how much less poetic it is in English) runs from Friday the 23rd of May to Sunday the 25th in the beautiful and historic courtyard of the Diocesan Museum attached to Sant'Eustorgio whose façade you see, here. The entrance to the museum is around the corner to the viewer's left.
Corso di Porta Ticinese, 95
10:30 AM - 7:30 PM
Tram 3 stops right in front of the church in both directions
I snapped this shot on the 15th of December, 2013.