Konstantin Melnikov (1890–1974) was a Russian architect and one of the leading figures of Constructivism, known for his experimental, avant-garde designs. His most famous work, the Melnikov House in Moscow, features an innovative cylindrical form with hexagonal windows, showcasing his radical approach to space and geometry. Other notable projects include the Rusakov Workers’ Club and various Soviet pavilion designs. Despite his early success, Melnikov was later marginalized by Stalinist architectural policies and was forced to stop practicing. His visionary work, blending functionality, artistic abstraction, and structural innovation, remains a major influence in modern architecture and architectural theory.