“The Fifth Knot”: Interlaced Roundel with Seven Six-Pointed Stars is a woodcut created by Albrecht Dürer before 1521, likely inspired by Leonardo da Vinci or his workshop. Part of Dürer’s Six Knots series, this intricate design features a continuously interwoven roundel adorned with seven six-pointed stars. The composition reflects the Renaissance fascination with geometry, symmetry, and ornamental patterns, demonstrating both artistic virtuosity and mathematical precision. From Metropolitan Museum of Art, public domain.