Chicago cityscape, modern skyscrapers, glass and steel buildings, Willis Tower, Millennium Park, urban landscape, daytime, clear blue sky, few white clouds, sun casting long shadows, busy streets, taxis and buses moving, pedestrians walking, suits and briefcases, laptops and coffee cups, modern architecture firms, offices with large windows, wooden desks and ergonomic chairs, floor-to-ceiling bookshelves, green plants, water coolers, city maps on walls, creative brainstorming sessions, designers working on computers, 3D models and blueprints, natural light pouring in, warm and cozy ambiance.