La Concha is routinely called Europe's best city beach and the claim survives inspection: a golden shell-shaped bay held between two green headlands, with a belle-époque promenade running its full length. The old town behind holds more Michelin stars per square metre than almost anywhere on earth — though the pintxos bars are the real religion. Swim, eat, stroll, repeat. September is perfection.
Featured in Ten city breaks with a seriously good beach attached · Beach