Hector Guimard (1867–1942) was a French architect and designer, celebrated as a leading figure in the Art Nouveau movement. Born in Lyon, he studied architecture at the École des Beaux-Arts in Paris. Guimard is best known for his curvilinear, nature-inspired designs that blend functionality with artistic expression. His iconic works include the Castel Béranger in Paris, which gained him fame, and the Paris Métro entrances, emblematic of Art Nouveau's organic style. Although his popularity declined with the rise of modernism, Guimard’s innovative designs have since been recognized as masterpieces of early 20th-century architecture and decorative arts.