I have been where they film TBR and TDG, Unfortunaly it was in May when they are not fliming it and I couldn't go inside of it but it was a fantastic trip upto Newcastle to see it! Also at the same time i went there, I went to see where they film a bit of Harry Potter at Alnwick Castle! I went with my Gram!
Filming
Filming it usually takes 13 weeks to film, a week to film one episode!
After Filming
After Filming they have a wrap party which its a normal party to wrap of all the filming