Perched above the Vigo Estuary, this stone-etched stronghold stands as a quiet reminder of the city’s military past. Built in the 17th century to guard the coastline, the fortress extends into the Galician Sea, blurring the line between land and water.

Today, the fortress is less about warfare and more about perspective. Its thick walls and bastions offer eye-catching views over the city, the harbour and the Cíes Islands further afield. Walking along the ramparts, it’s easy to imagine lookout posts scanning the horizon while cannons stood ready below.

The site itself is compact and easy to explore, with restored sections, information panels and open spaces that invite a slow wander. It pairs well with a stroll through Vigo’s old quarter, sitting just above the historic streets and giving context to the city’s long relationship with the sea.

San Sebastian Fortress may not be grand in scale, but it delivers atmosphere in abundance. Part viewpoint, part historical landmark, it’s a calm and rewarding place to pause, take in the scenery and see Vigo from a different angle.