I remember this as a child but was never sure if it was just a dream. Only in recent years and research i found out that this was in fact a real TV series that i watched when i was about 5 years old. I remember the hole in the wall, the invisible girl with the hankie and the big dinosaur statue that the children went inside and it came to life. All very bizarre just like a dream but it was very magical for every child who watched this. We have the Railway children and the secret garden shown all the time written by the same author. It seems not many people have heard of The Enchanted castle. This needs to be shown again. I'd do anything to see this series again.