Holy Mackerel! That is just incredible. And what a space! The bench work is every bit as impressive as everything else. That might be the thing that impressed me the most, but there were so many? From the channels, bridges and locks, it sure looks like they are going to have rivers with running water? I doubt you could get any better than this hiring an entire professional crew?
Looks like that was a lifetime in the planning and another lifetime to complete. They have really made some progress though, that's impressive too. Also the equipment they had to build it all with. I have never seen the spray on foam insulation used on a layout, or steel bench work, or a whole bunch of other things they were doing there. Some extremely talented folks there. They are very fortunate to have the talent, imagination, skills and resources to accomplish something like this.