Basically this is a collage of many different pics i found over the internet, it resulted as something like an Alex Ross piece of work. The building was re-created using CorelDraw and then finished on Photoshop. The reason was because the source came in low-res quality.

Notice the guy holding the Daily Planet newspaper? His left hand was taken from a pic of a little boy holding a newspaper upside-down. Look closer.

Sources : Getty Images and various.