"Kolga manor was built as a summer residence for the Emperor to get away from the ruckus of the Capital and hunt wild mafoons, as being a ruthless tyrant can be pretty exausting.
The court architects have done a great job in making the manor look like a castle of some evil sorcerer from the dark ages. Now the whole complex has been fortified to serve as a shelter for the monarch."
The Emperor's base is a unique building in the game & serves almost no purpose other than an objective in the game.
It first apears in mission 10 on L-Brus where you fly to it to arrange a cease fire for the United System . But it is promptly bombed by the newly arrived Earth forces. Its ruins still remain upon your return to L-Brus.