@ShabbyAbby yes, you're correct. Since the recession government funding has been cut to the bone for lots of heritage, and as I'm sure you'll appreciate, the upkeep of these sites and museums is expensive.
Unfortunately there is a prevailing attitude in this country that access to heritage should be free, and whilst I agree with that, the reality is that when the government stops providing the funding then the money has to come from somewhere. But people resent paying.
I used to work for a heritage body in the UK. We worked on a site that we used to open, for free, to the public. It was fantastic, loads of people came and had a great time. On nice summer weekends we could have 2,000 or more come through the door! However we had no funding to help with the costs of opening (we used to volunteer our weekends and do all the cleaning / staffing / advertising ourselves on top of our actual jobs) and so we couldn't keep up with the wear and tear on the site, which is what happens of course when you have lots of visitors. Things were left unrepaired and unmaintained.
So in the end we had to close to preserve the site. There was local outrage. So we decided to try opening again, but this time with a very small fee of £2 per adult and 50p per child. The fee wasn't to pay for our time but solely to help pay for cleanup, maintenance etc.
No-one came. Over the month we tried it, and it was in the summer holidays bear in mind, we had about 60 or 70 people. Over four weekends!
It's a sad time for heritage in this country at the moment. Government funding has slowed to a trickle and is showing no signs of picking back up. People are quick to complain when things close but are for the most part unprepared to contribute to the preservation of these museums and sites. So it's a catch-22.