San Maurizio al Monastero Maggiore is also known as the 'Sistine Chapel of Milan'. It's located in Corso Magenta, in the very heart of the city.
The church features 16th-century frescoes by Bernardino Luini and other Renaissance artists. It was once part of a Benedictine monastery.
It's divided into 2 sections: one for the faithful and one for cloistered nuns, and it's possible to visit both nowadays.
The monastery later became the Archaeological Museum of Milan, separating it from the church. A highlight is the 16th-century Antegnati organ, restored in 1982 to recover its original sound.
This is a must-visit place in Milan and it's free to go inside.