In Sheffield, Massachusetts, in the heart of the, Berkshires there is a home that has one of the most unique self cleaning pools you’ll ever see. This stunning 50 acre estate’s pool was once an old limestone rock quarry. The creative owner saw the potential of turning the quarry into a rustic and naturally beautiful pool, from what formerly looked like a hole in the rock and piles of rubble. The natural colors and beauty of the limestone gives the pool the ambiance of a luxurious outdoor spa. Couldn’t you just picture yourself getting a relaxing massage pool side, while listening to the soothing sound of the waterfall?