All of the successful amusement parks, attractions, or entertainment destinations have an idea that is powerful. No abstract theme, no appropriated idea. But a strong, discriminating vision which may develop into an efficient, expandable experience. The basis upon which a project turns out to be memorable or forgettable is the idea generation.
The leisure environment in the modern world is very competitive, and no originality suffices. The ideas should be interesting, operationally viable, culturally appropriate, and commerce-wise healthy. It is that equilibrium that makes imagination a place that people would travel to.