Ictinus was an ancient Greek architect known for his significant contributions to classical architecture. He is best recognized for his role in designing the Parthenon, a temple dedicated to the goddess Athena on the Acropolis of Athens. His work exemplified the principles of symmetry and proportion that defined ancient Greek architecture. In addition to the Parthenon, Ictinus is also credited with the design of the Temple of Apollo at Delphi. His architectural style emphasized harmony and balance, which influenced later architectural developments in both ancient and modern times. Ictinus remains a key figure in the study of ancient Greek architecture.