The Pinnacle Zenith is a spiral tower found at the very center of the entire universe, in the Central Spire. It lays mostly buried within the namesake mountain.
The tower is filled with numerous chambers which served many utilities; most unrecognizable today. Corridors spiral through it and vast staircases connect them. Some recognizable structures are the titans' chambers, each large enough to fit their respective titan, the planetary rooms, which are arenas designed to combat the planets in the War in Heaven, and the Reverse Combustion Engine.
The spearhead is a drill-shaped cone at the top of the Pinnacle.