The present invention relates to a greenhouse comprising outside wallsprovided with translucent surfaces (2) suchthat light may be received into the greenhouse (3) from at least twogeographical directions, a roof structure (7) and a roof (6) providedwith an insulating material portion. The invention is characterized in thatthe outside walls, in connection with the translucentsurfaces (2), are provided with a light reflecting yard structure whichresides below the translucent surfaces (2), above aground surface (50), and extending away from the outside wall. The greenhouse(3) may further comprise vertically positionedlight reflecting surface elements (40) and light reflecting shade elements(44) movable in a direction parallel with the transparentsurfaces (2).
