'Cities of the Fantastic - The Invisible Frontier' - volumes 1 and 2.  Hardcover graphic novels by Schuiten / Peeters.  These are classified as 'science fiction graphic novels'.  The stories are engrossing and the illustrations are superb.  These are a wonderful addition to any graphic novel collection.  The books are in great condition.  Pages are crisp and glossy, colors are bright.  Both books have a very slight warp to the front leaf blank pages - it can't be seen when the book is closed - and only under really direct light can you see it.  Outer cover corners show the slightest of wear. please see all attached photos for detailed condition.