The top of the cistern would have made a huge table but at only knee high we would have had to excavate for seating. Nope wasn't gonna work so I asked them to make a rectangle we could use it as a small patio - covered someday. Here they are blending the rectangle top with the circular one.
The bottom foto is the foundation for the lot sidewall. Just ordered another 1000 blocks for the front wall foundation and the septic tank.