~The court of pure souls is in the center of Soul Society, a circular shirō with four main entrances, each guarded by a Gate Guardian. The walls are made of deathstone, a material known to sap all spiritual and psychic energy when one portion is faced in a particular direction, similar to magnetic lodestones. The deathstone also forms a spherical barrier around the city, preventing anyone from entering anywhere other than the four gates.~
~At the center of Seireitei are the Shrine of Penitence (senzaikyū), a white tower, and Sōkyoku (双殛) Hill, where executions take place~