BEST possible Level 7 Town Hall in the game Clash of Clans (early stage). All walls are two-layered on all sides. Note that the Hidden Tesla are not built yet on the left and right side. Late stage will have some buildings changed around to account for the finished Hidden Tesla. The enemy attackers will waste all their time on the walls, and if they were to penetrate the inside, then they will be attacked by ALL your troops because they are all within the reach of the center.
Video shows multiple attacks and all failing because of this strong defensive structure. The inside resources are protected by double layers of walls, and the Wizard, Archers, Cannons, etc are all surrounded by walls. The Town Hall is even protected by a layer of walls. This is an extremely strong base design.