Easily my favourite castle https://en.wikipedia.org/wiki/Llansteffan_Castle
Easily my favourite castle https://en.wikipedia.org/wiki/Llansteffan_Castle
> Easily my favourite castle https://en.wikipedia.org/wiki/Llansteffan_Castle
Llansteffan Castle is free to enter and wander around in the way you did as a kid, despite being privately owned
What's not allowed are things like wedding photography and drone flying, at least without paying (and having various insurance).
Basically it's free unless you're making money from it.
Not trying to say what you're describing doesn't exist, but the only place I can think of that I've been to that charges to see some 3ft high bits of wall would be Old Sarum, but that also has great views.
Only a tiny percentage charge and are treated as proper tourist attractions.