Sunshine Castle Bli Bli
To start with, I ought to say that I grew up in Windsor in England where there is a *real* castle... which was started in 1066 and into one of the towers of which the "Sunshine Castle" would fit with room to spare, in fact I'm not convinced the Dolls House there isn't nearly as big as this castle :)
Needless to say I was disappointed. Even on first sight, the bricks from which it is built are disproportionately large in comparison to the size of the building itself, and there are plastic dinosaurs on the "ramparts" (all kinds of wrong). The interior was dark and gloomy when we were there, and the small ponds rancid and smelly.
There are some decent displays there though, and the doll collection might appeal to some. There is also a cafe which requires no entrance fee to be paid and the organisers host various events throughout the year, for example an opera for 3ish nights each May and frequent markets.
I certainly wouldn't go out of my way to visit it, if passing it might be worth a drop in but other than that I wouldn't recommend it... That said I am biased, having visited many stately homes and castles around Europe.