The sense of scale for that massive bridge-like structure is amazing in this picture. It's a combination of the large buildings in the foreground being dwarfed by the bridge, but also that the bridge is so far away it's faded by the atmosphere. And of course, all these blues, especially the sea, look gorgeous. Simply an astounding composition.
You certainly get those imaginations inhabitants of other dimensions and other planets with existing lives. I know you have a lot of talent in this kind of work, but if you believe in other people is certainly with the thoughts and ideas focused on this element type.
I've had some imaginations alike that when I woke up I did not want to return, are things that I do not know how to explain, but able to demonstrate in Art. But I do not have any tool to be able to express these views I have.
I really wanted to be able to draw so that neither you, Congratulations.
NOTE: (Google Translate) I'm from Brazil and unfortunately I can not speak English.
No airbrush, no wacom. This was built as a 3D virtual world, where I can move a virtual camera and take virtual "photos" (which we call "renders", in this kind of software). It's similar to some techniques used in movies to fake environments.