Plant for laying bottles in a tête-bêche arrangement comprising: - a device for receiving bottles in input in vertical position, connectable to a bottle transport line; - a line for laying bottles in containers; - a system for positioning in the tête-bêche arrangement one or more groups of bottles received by said receiving device; and - a device for transferring one or more groups of bottles in the tête-bêche arrangement from said positioning system to said laying line, wherein said bottle positioning system is structurally and functionally separate from said bottle transferring device wherein said system for positioning bottles in the tête-bêche arrangement is structurally incorporated in said bottle receiving device, wherein said bottle receiving device comprises: - two separate bottle storage lanes (11; 12), which extend parallel to each other along a bottle feed direction and are transversely separated from each other to define a free space; and - a bottle diverter suitable to distribute the bottles between the two storage lanes (11, 12), and wherein said system for positioning bottles in the tête-bêche arrangement is located in the free space between said two bottle storage lanes (11, 12) and is suitable to operate on bottles present in said two storage lanes (11, 12), characterized in that said system for positioning bottles in the tête-bêche arrangement comprises a plurality of bottle handling devices (31, 32), each of which is suitable to pick up a single bottle in vertical position from one of the two storage lanes (11, 12) and to position it horizontally in the free space between the two storage lanes (11, 12) with the bottle bottom-neck axis of extension placed transversely to said bottle feed direction and with a neck-bottom orientation inverted relative to the orientation received by the bottles positioned by two handling devices adjacent thereto, so that the set of said handling devices (31, 32) arrange horizontally one or more groups of bottles placed side by side to each other in the tête-bêche arrangement, and in that said handling devices (31, 32) are organized into two separate operating groups, wherein the handling devices of a first group are suitable to pick up bottles from a first of said two storage lanes and position them horizontally with a first neck-bottom orientation, while the handling devices of a second group are suitable to pick up bottles from the other storage lane and position them horizontally with a second neck-bottom orientation, inverted relative to the first, the devices (31, 32) of said two operating groups being arranged in alternating sequence along a direction parallel to said bottle feed direction, and wherein each handling device (31, 32) is positionable in an adjustable manner relative to the other handling devices (31, 32) in the longitudinal direction and/or in a direction transverse to said feed direction so as to adapt the positioning of the bottles in the tête-bêche arrangement to the different sizes of bottles that may be processed by the plant. - a device for receiving bottles in input in vertical position, connectable to a bottle transport line; - a line for laying bottles in containers; - a system for positioning in the tête-bêche arrangement one or more groups of bottles received by said receiving device; and - a device for transferring one or more groups of bottles in the tête-bêche arrangement from said positioning system to said laying line, - two separate bottle storage lanes (11; 12), which extend parallel to each other along a bottle feed direction and are transversely separated from each other to define a free space; and - a bottle diverter suitable to distribute the bottles between the two storage lanes (11, 12),