The Playa de la Concha is, without a doubt, one of the most essential things to see in San Sebastian. Aside from one of the most famous beaches in Spain, the beach is also near two of the most important places to visit in San Sebastian: Miramar Palace and La Perla Centro Talaso.
From Playa de Ondarreta, you can travel by cable car to Mount Igueldo, another of the most popular San Sebastian attractions where visitors can enjoy beautiful views of the city. At the end of the beach, you can also find the Peine del Viento, a work by the sculptor Chillida that has become a true symbol of the city.
From Ondarreta you can also take boat trips to the Isla de Santa Clara, but if the tide is low and you're in the mood for more physical San Sebastian activities, you can get there swimming as it is only 500 meters away.
However, the list of what to do in San Sebastian isn't just limited to the coast, there are also plenty of things to see in the city center. Some of the most interesting things to do in San Sebastian proper include the Kursaal Convention Center (famous for hosting the Jazz Festival and its beautiful nighttime illuminations), the Victoria Eugenia Theatre (headquarters of the San Sebastian International Film Festival), the San Sebastian Cathedral or the San Telmo Museoa, which is located in an old Dominican convent. For more stuff to do in San Sebastian, check out the tips and recommendations from minube's community of real travelers and discover all the best activities and attractions in San Sebastian.