In order to fight any further diffusion of Covid-19, people are advised to be very cautious when meeting others. A distance of a meter or so should be kept.
.:. Though Milan and Lombardy are still at risk, some behaviours are allowed. Not only shops are at work, and bars and restaurants may serve, but also museums, theaters and cinemas operate again. Starting from May 1st, 2022, even providing evidence to be vaccinated or healed when entering some venues has no longer been compulsory, and from October 1st face masks are requested in retirement homes and hospitals only.
.:. Official news at the YesMilano website.

The sixteen columns of the 2nd century AD still standing in front of the basilica of San Lorenzo are the most important Roman remains in Milan.

They were part of a temple (or perhaps even a public baths complex), and were transported here in the 4th century AD to form the front side of a four-sided portico.

Corso di Porta Ticinese 
Ticinese district
Sant'Ambrogio
 map