I've been a couple of times, always on a road trip to or from Jax, FL (where I lived) and Baton Rouge, LA. I never could finish it though (complete indoor/outdoor tour) because I didn't have the stamina to walk that much in the allotted time. Unbelievable, compared to the ground I cover today, almost daily, and back then I couldn't cover the distance of a single museum (walking slowly with frequent sitting breaks).
This is why walking is such a good exercise. Now I am a little person, 5'8" and 135, but I walk a lot. I walk my dogs at least 3 x 1 mile walks each day and any time I want to go somewhere within a mile or two, without needing to return with a heavy load, I walk. Today, I wanted a Five Guys burger for lunch. It was 64 degrees and sunny so I walked the two miles both ways (twenty minutes each way).
If it has been a while since a good walk I will feel the muscles tighten but I push through and the discomfort fades away. I read while I walk so the time goes by in a flash.
