What’s not to like?
It occurs to me that I’ve never met anyone who admits to disliking castles. Proper ones that is, preferably ruined. Nothing worse than a castle full of inhabitants. That's always the fatal flaw with
Battlefields, on the other hand, can be a touch dull. I have a soft spot for them but can sympathise with the 1/3rd of my uncles who slowly froze as I tramped around the Culloden battlefield occasionally shouting out excitedly that I’d found the place where young Wolfe of Quebec fame had probably stood, or some such. Earlier this year, myself and 50% of my brothers and sisters-in-law (and their dog) visited
Stick to castles. You know where you are with them.