Sydney by Simon on Instagram: "Happy World Skyscraper Day! 🏙. A look a some of the skyscrapers set to change Sydney’s skyline in the coming years. Skyscraper Day is observed annually on 3rd September to commemorate all towering wonders of architecture and engineerings. The 3rd of September was chosen for Skyscraper Day to commemorate the first master architect of high-rise buildings, Louis Sullivan, who designed worked in Chicago the first steel-framed 10-story building, the now-demolished Home