Location from Sword Art Online by Reki Kawahara
The Axiom Church's hundred-floor tower — a vertical dungeon of Integrity Knights, traps, and stolen memories, with a false goddess waiting at the top.
The Central Cathedral is the Alicization arc's dungeon — Kirito and Eugeo climb it floor by floor, fighting Integrity Knights at each level, in a structure that mirrors Aincrad's floor-by-floor progression. The parallel is deliberate: both are towers to climb, both have bosses on each level, and both have a creator waiting at the top. The Cathedral houses the Axiom Church's infrastructure: the Piety Module storage, the Knight synthesis chambers, Cardinal's hidden library, and Quinella's personal quarters. It is simultaneously a church, a prison, a laboratory, and a monument to one woman's three-hundred-year ego project.
A towering white marble spire of 100 floors that dominates Centoria's skyline. Each floor is a different chamber — armories, gardens, libraries, Knight quarters, and trap-filled corridors designed to prevent anyone from reaching the top. The architecture becomes more ornate and alien as you ascend, reflecting Quinella's increasingly disconnected aesthetics. The top floor is a vast chamber of crystal and light where the Administrator sits on a throne of impossible beauty.
Also known as: Central Cathedral, The Cathedral