This work belongs to the portfolio of a very young and talented Spanish illustrator, Miguel Navia. I discovered his work via this address and was amazed by the mysterious atmosphere and sense of space of his drawings. He has done so many professional work in spite of his youth! The illustrations above have appeared in book covers, posters and children's books illustrations, to me this is 100% artistic.
You can see his online portfolio here. I love it.
Images: courtesy of Miguel Navia, thank you so much Miguel!