A tank housing a vertical farm, having inside a plurality of structures at different heights that are supported on the tank wall such that they create ring-shaped projections on which to place the trays for the crops and the remaining installations and channels, wherein, since the structures are arranged as rings, a hollow space is created in the central shaft of the tank that is used to install a liftable platform so that an operator or robot may access the different trays holding the vegetables, and wherein on the lower portion of the tank are located closed and sealed compartments intended for the hydraulic, electric and electronic systems for controlling the parameters necessary for crop optimisation.