Daen's base is a floating fortress where he sends his Terra Resetters from. The base was huge, larger than Rescue Pheonix. On top is a landscape with Obuchi's mansion and a fighting course.
In his final master plan, Daen connected all the Terra Resetters to his base, turning it into a giant Terra Resetter. The base was destroyed when the redeemed Obuchi pressed a self-destruct button that destroyed the whole floating base.