On my last Sunday in Lisbon, the local “lockdown” was started so only in the morning we were able to circulate on the street, which is rather ridiculous, they did this a few times and in the end, everyone just rushes to the places they can in the morning and normally the parks, the riverside, or markets get quite crowded.
Every first Sunday of the month, there is a flea market in Anjos 70, a space for event, art and concerts.
They have a cosy cafe inside, you can get coffee, brunch and meals.