Sydney Opera House, architecture design conference, lecture hall, wooden chairs, rows of seats, professional attire, suits, ties, laptops, notebooks, pens, Sydney Harbour Bridge view, cityscape, blue sky, sunny day, natural light pouring in through large windows, modern interior design, minimalist decor, abstract sculptures, inspirational quotes on walls, audience taking notes, presenter speaking at podium, microphone, projector screen, 3/4 composition, soft focus background, shallow depth of field, natural lighting, realistic rendering.