This San Francisco foto contains
distrito de negocios, el centro, centro de negocios, and centro de la ciudad.
There might also be
calzada, calle, escena de la ciudad, entorno urbano, configuración de la escena de calle, ciudad, and urbano.
Sony filmed a really cool ad for their high-end Sony Bravia TVs in San Francisco where they released thousands of bouncing colored rubber balls. The effect is spectacular.