Wind turbine having a floating offshore foundation which comprises - the wind turbine, - a support structure consisting entirely of hollow tubular support elements (74, 98, 106) which are interconnected by means of node points (60, 88) so as to be liquid-tight, - a central region which supports the wind turbine and is in the form of a multi-leg structure comprising an outer lower foot region (82, 88), the multi-leg structure having a head formed thereabove, and thereon, which acts as a coupling element above water level, and by means of which the legs of the multi-leg structure are interconnected, and the lower foot regions (82, 88) of two adjacent legs of the multi-leg structure being connected by means of a hollow transverse rod which is conducive to buoyancy, by means of which support structure the gravitational force of the load to be supported is directed downwards and support structure comprises a lower end region which is under water when the offshore foundation is in an anchored position, - tension elements, articulated regions for fastening the tension elements being formed below the outer lower end region of the support structure, by means of which articulated regions the offshore foundation can be anchored under water, characterised in that buoyancy bodies are under water, by means of which a buoyancy force is generated which counteracts the gravitational force, in that the buoyancy bodies are arranged above the lower end region of the support structure, in that an anchoring means (20, 22) is provided which comprises at least one weight anchor for holding the buoyancy bodies at a predefined depth below the water level, the weight anchor which has a fillable outer shell made of reinforced concrete being designed having a plurality of chambers to be filled individually, such that the outer shell of the weight anchor can float when empty, the outer shell of the weight anchor is adapted to being flooded with water so as to be brought down to the sea bed (24, 26), and the outer shell of the weight anchor is adapted to being filled with a material that has a higher specific gravity than water. - the wind turbine, - a support structure consisting entirely of hollow tubular support elements (74, 98, 106) which are interconnected by means of node points (60, 88) so as to be liquid-tight, - a central region which supports the wind turbine and is in the form of a multi-leg structure comprising an outer lower foot region (82, 88), the multi-leg structure having a head formed thereabove, and thereon, which acts as a coupling element above water level, and by means of which the legs of the multi-leg structure are interconnected, and the lower foot regions (82, 88) of two adjacent legs of the multi-leg structure being connected by means of a hollow transverse rod which is conducive to buoyancy, by means of which support structure the gravitational force of the load to be supported is directed downwards and support structure comprises a lower end region which is under water when the offshore foundation is in an anchored position, - tension elements, articulated regions for fastening the tension elements being formed below the outer lower end region of the support structure, by means of which articulated regions the offshore foundation can be anchored under water, characterised