Howl's Moving Castle's Poster

This poster is from Japanese movie called Howl's moving castle. It is one of the most famous movie from Studio Ghibli. The movie was released at November 20th,  2004 . The writer and the director of this movie, Miyazaki Hayao (宮崎　駿) created this poster as well.  

The text in the upper middle says, “This castle moves”, which is very interesting statement for a poster that catches the attention.