Barcelona’s my second favourite child free city break after Berlin, though it works with kids too as it goes. We’ve been a few times, with and without.
Anyway, don’t miss the actual beach for a stroll along the prom prom prom, and get stand in the toes. It will be a good deal warmer than Scarborough in an August heatwave*.
Montserat’s worth the effort for getting out of town, with some good waymarked walks.
Oh and the huge wild area, behind Tibidabo is good for a stroll. Saw a couple of interesting looking trails in there as it goes… Had we had longer I might have tried to hire a bike.
*Ok the air might not be – av. temp 20ish – but the sea bloody will. I’ve been a few times and surfed there in December in a very thin wetty. First thing in the morning – blue skies, bright sun, warm, funny tasting water…