It's the kind of movie that's filled with incongruities and unexplained oddities. Mostly they're offhand; some may be intentional. They're just the sort of thing that kids find charming, but they could drive adults to distraction. Where is this place, where some speak with a British accent and some do not, where dirigibles fill the sky, where the cars are from the 40s but the TV has a remote control? Why do the little people all have reddish kinky hair?
What are all those bits of stuff that make up their clothes, and tools, and furnishings? You see, this goes on and on. If you can manage not to watch this movie as an adult, you may find that it does have its charms.