I can't believe they're going to close the Theatre Museum in London. It's right in Covent Garden, and it's one of the most fun museums I've ever been to.
Here's a photo from a visit some years ago, when Kitty and Hannah were obviously a bit smaller than they are now.
If you haven't been, go there. Soon. And sign the petition to save it.
It really is a fantastic place. There are interactive exhibits for children, workshop sessions on costume and make-up and the like, and a lot of really serious good archive material on the history of the London Theatre.