Sweet Justice is an ice cream shop located in Metropolis that Barry Allen works at part-time. It also serves as a secret base for the Super Hero Girls.
History
Sweet Justice was destroyed during a battle between six heroes and an army of robots. Three months later the hangout had been rebuilt, and the basement converted into a command center -which may be accessed by a secret slide- for Batgirl and her five friends -who call themselves the "Super Hero Girls"- in gratitude for their efforts to save the place.[1]
As overseeing her team's secret headquarters buildings, Batgirl made sure that each hero had her own little corner.