The geometric installation on the Main Courtyard of the National Museum is a fusion of Janusz Kapusta's K-drone and Leonardo da Vinci's "Vitruvian Man". K-DRON is an eleven-sided spatial form with unique optical, acoustical and structural properties. Its basic form has a square base, eleven multifaceted sides, and a diamond-shaped face with a 45-degree angle of inclination. The installation measures 3x3x22 meters and is composed of both black and white objects. The opposite side of each wall is its negative and the entire structure has built-in mirrors. The surface structure is both symmetrical and asymmetrical, concave and convex.