Urahara styled his shop's secret training ground on one he built beneath Sōkyoku Hill while young. In this training ground, he and Yoruichi Shihōin would play and train. When Ichigo Kurosaki narrowly escapes defeat by Byakuya Kuchiki, Yoruichi takes him to this training ground in order that he might rapidly attain Bankai through use of the Tenshintai. Renji also attains Bankai in this space.
While very similar in appearance to the Urahara Shop's training ground, the Sōkyoku Hill training ground also sports a hot springs whose waters have the power of healing injuries.