Hi James and Gina,
Sorry about the delay. We went to Iowa to see Matt and Mandy and the children. We also went to Omaha Zoo which was absolutely brilliant. Hadn't been there for a few years and they have done a lot to it.
This dome - the World's biggest geodesic dome (Uncle Alan is suffering from dome-envy) houses the desert exhibits. It's really amazing though I think it would be even more fascinating to see it in the depths of a Midwest winter.