I'm still not in a place where I can travel much, but I think the first place I'd visit is Andorra on my way to Barcelona.

Sorry to hear about the Fence war. Down here we have a TV show (de rijdende rechter) The traveling Judge, that would often cover border disputes that involved moving Sheds, Fences, Hedges, Driveways and such. Amazing how much trouble is generated by an error of 10cm by some surveyor from long ago. Sad really, but sometimes it makes for good TV (if TV can be considered good at all).

I'll have to visit your YouTuber and see what's on offer since I never got into Picasso, just don't get him. Dali is another matter and Miró I'm not familiar with.

I have some errands to run so I hope to run into you again later. Cheers!