From the publisher's website:
This new set of products is based on Øone’s popular Øone's Blueprints. In Blueprints Backdrops, you will find a fully developed version of one of the locations from the Blueprints line. The Backdrop features a complete description of the location, and its NPCs and monsters (if any), penned by one of our talented writers, and portrayed by skillful artists. You also get a simpler version of the map found in Blueprints and a complete detailed 3D map of the location. The 3D view will help you to visualize the area and better describe it to your players. You can even show it to them, if you wish.
The product is suitable for use with any fantasy RPG system. We have separated the d20 stats from the main text, allowing you to print out either a generic description or a fully d20-statted version.
But the good stuff is just beginning.
This product takes full advantage of PDF technology, joining old-fashioned style with the most advanced electronic features.