Warning: Page using Template:Infobox settlement with unknown parameter "title". Warning: Page using Template:Infobox settlement with unknown parameter "pushpin_map1". Warning: Page using Template:Infobox settlement with unknown parameter "pushpin_map_caption1". San Sebastián or Donostia is a coastal city and municipality located in the Basque Autonomous Community, Spain. It lies on the coast of the Bay of Biscay, 20 km from the French border.