I'd appreciate any advice or suggestions please, we're a couple just starting to plan our first trip to Spain for late September, about 8-10 days including travel. Barcelona and Bilbao are high on our list of must-sees. Not sure where else we should go on this trip beyond Barcelona / Bilbao or what's easily accessible from there? We prefer not to drive and enjoy dining, the arts, museums, contemporary art, architecture, fashion, shopping--and some tourist sites but we don't typically do tour groups or highly touristy things. We don't have an unlimited budget but do like to travel in comfort.
Any suggestions re. what to see, where to go or how to plan that speaks to our interests would be greatly appreciated, thanks so much. (gracias!)