Portable skates venetian

What was the name of this trippy kid's movie from the 90's? - trippy movie 2009

I vaguely remember, was the early 90s and had several children and an overview of some white pieces together, one had of them, they choose a door, and I think that one end of Castle.
It was really surreal.
I think it was like a 90-minute film, which was released on VHS.
If you know the unknown or something similar?