We have an almost 14 year old and a 10 year old. They have form for being 'bored' easily and they don't like museums of any kind.
DH and I are thinking maybe Barcelona. We've both been before, but not recently (I think the last time was maybe 2003?). Our kids have enjoyed city breaks in the past - Valencia, Rome, New York, Paris all went down well - but they weren't quite so fussy even two years ago.
If you've taken DC that sort of age to Barcelona did they enjoy it? What did they particularly like? DS1 likes sport and food. DS2 likes Minecraft and swimming 