Sourced from predicthq.com - Festa de São João do Porto is Porto’s largest midsummer street festival celebrating the city’s patron saint with all-night street parties, live music and neighbourhood gatherings across the city. Revelers fill riverside districts and public squares to eat grilled sardines, carry manjerico basil plants, and playfully tap each other with small plastic hammers while enjoying concerts and pop-up performances. The festival is particularly notable for its communal atmosphere and spectacular fireworks and riverfront festivities on the Douro.