Hi. I remember watching this childrens movie many times back in the 90’s. I think it is Australian or maybe American. It is live-action and not animation. I think it is about a magical dragon or maybe some sort of monster that can enter a magical world by walking through a wall (I think). He goes on an adventure with some kids. Theres a scene where they are in some sort of terminal with those moving walkways you see in airports, only there are many aliens or monsters around. They get chased by monsters on some sort of moving/levitating vehicles.

I know it’s obscure but any help would be greatly appreciated. Thanks 🙂