This painting represents a personal challenge to do a matte painting without the use of photos as painting material. However, I used many photos for reference, though. All the brushes were painted from scratch, too, without any photos. I hoped to achieve a more painterly look like this. It was inspired after seeing photos of Dubrovnik which really looks like a beautiful city. There are so many fantasy elements in it, that you could almost place it in Middle Earth.
It was done entirely in Photoshop and took me about 13 hours to complete over 3 days.

Here are some details at 100%:

DetailA
DetailB
DetailC
DetailD

Here are some images regarding the actual conception:

Medley
Initial Sketch Phase
Painting Steps