I have been several times. such a big area and an ...

I have been several times. such a big area and an interesting place. I love the miniature of the building's signature each countries around the world. Ninja Go stand or area is one of my favorite. But, the restaurants are over price and not really good.
It's mostly outdoor activities, so better you check the weather forecast before you come.
The souvenir items are not interested enough.
You can reach by bus, if you stay outside of billund.