JoyfulNoise, the big concrete pad must have been used as a basketball court at one point in time. It's about 350 square feet. That is what the previous owner said. It's about 14 years old, and it was disgustingly gray/black overran with mold. I power washed it twice, stained it with concrete stain, and filled the expansion joints w/ polyurethane like it should have been done years ago. I did a similar thing to the pool deck. I had to fix lots of pavers and edging. Stained one side of the fence, and also had to put in a brand new fence on the side next to pool due to land settling. I do like the outdoor theatre idea. I will keep that in mind.