You reach Lu Bagnu by descending from Castelsardo's cobbled streets, leaving the medieval fortress behind as the road switchbacks down to sea level. The beach unfurls in a gentle arc, backed by low-rise hotels and a promenade where retirees take evening walks. Families stake out spots near the stabilimenti—private beach clubs with ordered rows of sunbeds—while freelancers spread towels closer to the waterline where the sand is public and free.
“Lu Bagnu delivers reliable beach infrastructure and medieval skyline views without the Costa Smeralda markup.”
Aerial view of turquoise tropical bay
The water here is calm, sheltered by the curve of the Anglona coastline. Children wade out to their knees without encountering a single wave, and the bottom stays sandy underfoot for a good twenty meters. Behind you, Castelsardo's honey-coloured ramparts rise in stacked layers, the Doria castle catching the afternoon light. Fishing boats rock in a small harbour to the east, their blue paint fading in the salt air.
By late morning the stabilimenti fill with multi-generational groups—grandmothers under wide umbrellas, teenagers on paddleboards, someone's uncle grilling sausages on a portable barbecue. A snack bar serves focaccia and cold Ichnusa beer. The showers work. The lifeguards show up. It's a beach that asks nothing of you except that you show up with a towel and decide whether you want to pay for a lounger or claim your own patch of sand.