Griffin’s 1912 winning design for Canberra introduced geometric layout, a central lake, and garden‑city principles—harmonizing city and landscape. His vision embedded national symbols (flag, coat of arms, native flora) into the capital’s fabric. Beyond Canberra, he designed Newman College (Melbourne), Capitol Theatre (Melbourne), and Castlecrag (Sydney), blending modernism, Art Deco, and Australian vernacular. He is celebrated as a foundational figure in Australian architecture and planning.