The whole thing seems to have a Disney/ theme park vibe to it which is appropriate considering both the world of Disney and the ideas of creationists are both grounded in fantasy. That brings to mind just a couple of ideas for attractions-
Devolution Revolution - Basically the teacups ride but instead of cups you're in baptismal fonts. You spin and spin until you're so dizzy that creationism actually makes sense.
Darwin's Monkey Island of Doom - Populated by all the strange creatures that truly would have come into existence had evolution been real. Dogs with opposable thumbs that would allow them to open the fridge, chickens with necks made out of solid steel so they wouldn't wind up on the dinner table and men with infrared vision that would allow them to see women's underwear would all terrorize the visitors to this island.
Dig Your Own Grand Canyon - For the wee ones. Dig your own 18 mile wide canyon in a sandbox with only a spoon.
Hall of Ugly People - Obviously natural selection and survival of the fittest would never have allowed the likes of Keith Richards or Dick Cheney.