John,
I do love how you think outside the box, you sick buster.
Speaking of hallowed ground, I had much the same thoughts walking through Valley Forge National Park many a time.
First of all, it's wonderful, sprawling land. Second of all, it already has many a Macdonald/Raynorish obviously artificial, geometric feature, built as fortifications for the anticipated British assault.
There are about 100 possible redan holes out there, not to mention many a Biarritz through trenches dug for hiding spots.
I'd also imagine it being a great spot for a Ryder Cup, if only I could convince the US Park Service to let me have free reign.
The fools don't seem to want to listen!!!