My wife read this exact article from 2013, purchased a 'Finnish Baby Box' from a private company that makes and exports them from Finland, and our baby slept in it for his first seven or eight months. It actually turns out the idea for the company itself was inspired by the same article too. Here's the follow-up from 2016 https://www.bbc.co.uk/news/magazine-35834370
There are free to access castle ruins and buildings of a similar age and much older all over the UK, they're hardly in short supply. Maybe you didn't intend it but this comes across as overly pessimistic. It's hardly as if every bit of history in the country has had a fence put round it to charge an entry fee.
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.
I turned 30 this year, born 1987, and I had no idea that I missed out on this kind of education by so few years.
I remember there were a couple of BBC Micros sat getting dusty in the corners of a couple of classrooms in both my infant (year 1-2) and junior (year 3-6) schools, but we never used them.
Instead we had brand new Windows machines on which we learnt Powerpoint, Excel and used Encarta. Joy.
Pre-uber I'd take the night bus, as I'm not paying £50 or £60 for a black cab from town to my home.
Post uber that same journey is now less than £25 and well worth paying for to avoid the occasional horrors on the night bus.