Smither Park – Houston, TX. My husband and I visited this park (actually, we found it by chance!) in June of 2013.
This park has a variety of conceptual installations being planned. The Memory Wall has several sections, with different artists working on each one. (There is a sign up on the back of the sign.) These photos show parts of the wall, including close-ups. Artists use a variety of materials to design their section of the wall.
The wall extends the entire length of the park.