Serra do Pilar Monastery and Viewpoint

Every city has one viewpoint that sums it up, and in Porto it is the terrace of the Serra do Pilar monastery. It stands on a granite bluff on the Gaia side of the Douro, at the southern end of the upper deck of the Luís I Bridge, and from its broad esplanade the whole composition of Porto lies in front of you: the iron arch of the bridge, the tiered houses of the Ribeira dropping to the water, the cathedral on its hill, the Clérigos Tower on the skyline, and the river curving away towards the Arrábida Bridge and the sea. Turn the other way and you look upstream to the Fontainhas slopes and the other bridges. It is free, open to the sky, and at sunset it fills with people, guitars and the clink of bottles, which is part of the charm. The monastery itself is worth knowing about. It was built for Augustinian friars between the sixteenth and seventeenth centuries, with an unusual design: both the church and the cloister are circular, and the round cloister, ringed by thirty-six Ionic columns, is considered unique in Portugal. During the civil war of the 1830s, the liberal army occupied the hilltop to defend Porto during the siege, and the building suffered heavy damage before its later restoration. Today it is part of the UNESCO World Heritage listing of the historic centre of Porto, the Luís I Bridge and the Monastery of Serra do Pilar. Visits inside the church, cloister and dome are offered at certain times, sometimes for a small fee, and the climb to the dome balcony gives an even higher view. But the terrace alone justifies the trip. Get here by walking across the upper deck of the bridge from the Porto side, by metro to the Jardim do Morro station, or by riding the Gaia cable car up from the waterfront. Come for sunset, then walk back across the bridge as the lights come on.

How to time it: the view faces north across the river, which means the old town is lit by the sun from late morning through the afternoon, and at sunset the sky glows over the Atlantic to the west while the Ribeira's facades turn gold and pink. That last hour is the moment, and it is popular; arrive a little early in summer to claim a spot on the wall. Below the monastery, the sloping Jardim do Morro garden is the more relaxed alternative, with lawns where people sit with drinks and street musicians play. Mornings are quiet and excellent for photography, with softer light and almost no one around.

Inside the monastery: the circular church is unusual and atmospheric, but opening times for the interior, cloister and dome are less predictable than the terrace, so treat an inside visit as a bonus if the doors are open when you arrive. The circular cloister is the architectural treasure, and the dome balcony offers the highest view on this side of the river. Part of the complex has long had military use, so some areas are not accessible.

Building it into a day: the classic loop starts in the Ribeira, crosses the lower deck of the Luís I Bridge to the Gaia waterfront and the port lodges, rides the cable car up the hill, climbs briefly to the Serra do Pilar terrace, and returns to Porto across the upper deck, with the metro rattling beside you and the river far below. That walk across the top of the bridge is one of the great urban walks in Europe. Fit: everyone. First-time visitors get the postcard, couples get the sunset, photographers get the shot, and families get a free, open space with room to run.