One of the unique features we have here at Memory Lane is our keyhole garden.
My curiosity was piqued a few years ago when I readthis articleon keyhole gardening.
Keyhole gardens are designed to assist people living in very dry climates to grow spectacular gardens with very little water. In some remote regions people have to carry water daily from quite a distance.
Keyhole gardens are 6 feet round by design, with a notch or keyhole cut into the circle.