Milan celebrates the feast of its patron saint, Aurelio Ambrogio, on 7 December with numerous events around the city. S. Ambrogio was a popular fourth century bishop, attentive to social issues, as well as a writer and politician. His feast is the Milan's favourite holiday and the city is overwhelmed by street fairs and shows.

The most popular event is the Oh Bej, Oh Bej! Christmas market, which dates back to 1288 and takes place from 5 to 8 December. The name Oh Bej, which in Milanese dialect means