Manuel Azevedo and Francisco Moreira, now both in their 70s, have been friends since childhood. Such a close connection has afforded them the trust and togetherness required to run O Buraco, the restaurant in Porto that the duo have presided over like generals for almost 50 years. In fact, it was right after completing his military service that Manuel, a native of Marco de Canaveses, a city within the greater Porto municipality, came to Porto proper in search of work. “I picked up the newspaper, saw the ad, applied and was hired as a waiter,” he tells us. On February 4, 1971, he entered O Buraco (“The Hole” for the first time; he hasn’t left since.

Matosinhos, a small city just north of Porto, is used to change. It has an industrial air to it, due to its 19th-century harbor, and its past prosperity was connected to the fish-canning sector, which peaked during World War II and declined from the beginning of the 70s. The numerous abandoned warehouses attracted nightlife during the 1990s, with clubs finding a fertile zone for noise. The completion of the long-delayed tidal pool, built by Portugal's starchitect, Alvaro Siza (who was born in the city), put it firmly on the map again after the project was delayed for decades. In January, the launch of the new, spiralling cruise ship terminal added to the contemporary design-y feel that has been developing on its otherwise rugged coastline.

Forget the famous francesinha. The best sandwich in Porto – arguably in the country – can be found in a little 1970s tile-lined eatery; the unremarkable interior belies the iconic status of its most celebrated dish. Served up on the corner of Praça Poveiros, a square named after the fishermen from the storied maritime city Póvoa de Varzim, located just north of Porto, the sandes de pernil (roast pork sandwiches) are a curious joy to watch being assembled as well as, of course, to eat. One by one, roast pork legs are slowly cooked in the huge oven in the kitchen behind the bar of Casa Guedes. They are then served directly from the roasting tray by the owner himself, Mr. Cesar.