6 Best Sights in Northern Portugal, Portugal

Within the walls of the Cidadela, you'll find the Castelo and the Domus Municipalis (City Hall), a rare Romanesque civic building dating to the 12th century; it is always open. The nearby Igreja de Santa Maria, a church with Romanesque origins, has a superb 18th-century painted ceiling. A prehistoric granite boar, with a tall medieval stone pillory sprouting from its back, stands below the castle keep, or Torre de Menagem, which now houses the Museu Militar (€3). It displays armaments from the 12th century through World War I, but the structure itself is the main attraction, with its 108-foot-high Gothic tower, dungeons, drawbridge, turrets, battlements, and vertiginous outside staircase.

This castle was built (or at least reconstructed from earlier remains) in the 11th century by Henry of Burgundy; his son, Afonso Henriques, was born within its great battlements and flanking towers. Standing high on a solid rock base above the town, the castle has been superbly preserved. A path leads down from its walls to the tiny Romanesque Capela de São Miguel, the chapel traditionally said to be where Afonso Henriques was baptized—in fact it was built well after his death, although the baptismal font may be older. The ticket office is in the neighboring Paço dos Duques, former palace of the Dukes of Bragança, which may also be visited. It was built in the 15th century but has been irretrievably altered; in 1959 it became the official residence in the North of Portugal's president, but is normally open to the public, with impressive displays of tapestries, furniture, ceramics, paintings and weapons.

Held every Thursday in the central Campo da República, the Barcelos Market is one of the country's largest. Starting at sunup, vendors cry out their wares, which include almost anything you can think of: traditional ceramics (brown pottery with yellow-and-white decorations are a favorite), glazed figurines (including the famous Barcelos rooster), copper lanterns, and wooden toys. There are also mounds of vegetables, fruits, cheese, bread—even live poultry. In fall and winter, the scent of roasting chestnuts wafts across the square.

The old windmills that line Apúlia Beach are no longer in use but have been repurposed as charming rental cottages. Sand dunes protect this notoriously windy beach, making it a perfectly sheltered spot for families. The waters here are famous for their medicinal purposes because they contain high levels of iodine. You might see locals collecting seaweed, which is used as fertilizer for nearby farms. There are umbrellas and boat rentals. Amenities: food and drink; lifeguards; showers; toilets; water sports. Best for: windsurfing.

South of the Cávado River, Ofir's beach is one of the most beautiful stretches of sand along northern Portugal's coast. Huge dunes are bordered by rows of pine trees, which give way to rocks that jut out into the water and are visible at low tide. These rock formations are known locally as "the horses of Fão." Surfers usually hang out on the beach's southern stretch, but there's plenty of room for families farther north. There are also restaurants and beach bars just behind the dunes and huts that rent out umbrellas, windsurfing equipment, and boats. Amenities: food and drink; lifeguards; parking (no fee); toilets; water sports. Best for: solitude; sunset; windsurfing.

For sweeping views of the town, board this cable car that whisks you up to the top of Mount Penha in 10 minutes. The journey ends with a nice view from the gardens that overlook the city. The climb down is steep, so buy a round-trip ticket.