San Sebastián Centro is known for its stunning beaches, and you can see some sights area like Cathedral of the Good Shepherd and Concha Beach.
Unique features of Old Town San Sebastian include the historical sites and bars. Make a stop by Plaza de La Constitucion or Monte Urgull while you're exploring the area.
If you're spending some time in Aiete, Concha Promenade and Parque Aiete are top sights worth seeing.
Gros is known for its beaches, and you can plan a trip to Kursaal Congress Centre and Auditorium and Zurriola Beach while you're in town.
If you're spending some time in Amara, Reale Arena and Cristina Enea Park are top sights worth seeing.