The Rocket Hideout is a four-floored underground complex beneath the Rocket Game Corner in Celadon City. It is a secret base built used by Team Rocket to facilitate and administer their operations. Once Team Rocket disbanded, the underground part of the Game Corner was forgotten. Now that Team Rocket has returned after decades of waiting, the team has re-claimed this place. The inside is now all shiny and high-tech. You would have thought that science nerds were living down there instead.