I was fortunate enough to be able to work at Bletchley Park when it had become BT's Management College - and before the site was re-developed. The old Mansion House was (and is) a listed building - as are some of the wooden huts remaining on the site. The site for Collosus ( the computer) was gone - but the footings and a few courses of brick remained to indicate where it once stood. Many of the "Post Office Engineers", as they were once called worked on building the machine - quite a lot of it from telephone exchange equipment parts. Many of these were the backroom boys and "unsung heroes" that made the thing work. I met one or two of them - quiet chaps all.
The "canteen" building just outside of the gates was still there too - and we used it still for that function. One of the surviving wooden huts, (in a poor structural condition) , had quite a macabre reputation. It had been used as a morgue, at one point during the war - and many people said that it gave them a strange feeling whilst inside the building - though I am happy to say that I wasn't one of them.
The mansion house was the real gem, however - as it was practically unchanged from how it was during the war. Many of the rooms inside had pictures showing how they once were - and could be compared with how they were when I left there in 1993. Most were remarkably unchanged. There were quite a few pictures dotted about of Winston Churchill too - and it was possible then, to sit in the same place as he did.
I believe that part of the place is now a museum - but I have not been back there since. It was a nice place to have worked in - and many pleasant memories of it live on - and I'm rather pleased that parts of it will too. johnnybach