Hey guys. I'm thinking about taking my adult daughter to Spain in mid-November.

Any suggestions on where to go/what to do? We'll obviously go to Madrid and Barcelona (I'm thinking Gibraltar too) but I'm open to suggestions for anything beyond that.

We definitely like to visit cities and go to tourist attractions like museums, churches, monuments, and plazas/town centers. However, we would like to visit some nature areas and go on some reasonable walks/hikes too.

Appreciate it.