We used to go to Tring a lot when we lived in Ayelsbury. The last time we would have gone would have been about six years ago and it was still quirky but I prefer the Pitt Rivers museum more. Again, the last time we visited was about six years ago but the stuff on display is far more varied (Tring is ok if you like stuffed animals with lop sided smiles and being able to see the stitches where they got sewn back up, althought the dressed up fleas are fun).