Alpine Castle has a realistic design with 1000 sturdy foam back pieces. It is super challenging. Release year 1994. I downloaded some plans off the internet which show the different areas. Northeast corner, Southwest corner, West wall, East wall, Top View Northwest and Top View Southeast and Southwest plus detail of the Courtyard. Didn’t help me that much but I’ve put them in the box. Box has a few little knocks around the edges but pretty decent condition. No tears or rips, nothing has come apart.