A shell-shaped bay with almost no waves, a funicular to a hilltop funfair and an aquarium on the harbour.
Playa de la Concha
Sheltered, shallow and tidal, with a wooded island offshore. Lifeguards in summer, showers, and hire chairs along the promenade. Any age.
Monte Igueldo
A 1912 funicular climbs to a small hilltop park with a rickety wooden rollercoaster and a boat ride through a fake mountain. Ages 3+.
Aquarium Donostia
A whale skeleton, a shark tunnel and a Basque maritime history floor, out on the harbour wall. About two hours; ages 3+.
Isla de Santa Clara
Small boats run out to the island in the middle of the bay through summer: five minutes, a shallow beach and a short lighthouse walk. Ages 4+.
Rain and pintxo hour
It rains here in every month; the aquarium and the Eureka science museum are the fallbacks. Pintxo bars are standing-room from eight — go at seven.