Did you guys know about the Test Brick wall?
If you are heading down Main Street toward Sleeping Beauty Castle, take a quick right toward the locker rentals. There, just to the right of the entrance to the lockers, you'll find a red "brick" wall with many different patterns of faux bricks - some evenly spaced, and some wavy, like cobblestones. This concrete wall was constructed in 1954 as Disneyland was being built, and the various patterns were tests for various portions of the park. The wall was left in place, and the test patterns were never covered over.