Spain is a place I've never been but would love to go. The closest I've been is Portugal - I went there on a few family holidays - but never made it to Spain.
My mother, who still lives in Northern Ireland, used to visit Spain a few times per year until Covid kicked in.
Hopefully one day I'll get the chance to visit. Of course, being a football fan, I'll be wanting to see the Santiago Bernabéu and Camp Nou lol, but I'd also like to see place like Avila, the picture you included looks amazing.