The Urahara Shop is owned by Kisuke Urahara and sells various items from Soul Society. It's cover is a candy shop for humans. Ichigo and his allies usually come here to train or discuss plans on how to defeat an enemy.
This is the base only the Vizard know of, where the Vizard sleep, relax and enjoy free time. Others may go here if invited by the Vizard. they seem to have a underground basement it also serves as a meeting house.