The pages are tape bound with washi tape. The cover is brown card stock printed with the words Babel and Babble in different sizes and type fonts, with an image of the tower glued on.
I like the idea of this book better than I like the book. The shaped pages don't show as well as I'd hoped, probably from lack of contrast. If I were going to make this book again, I think I would glue each page to some darker paper or card stock, then cut it out leaving a very narrow dark border around each page. That would make the pages pop and show off the tower shape better.
Oh well, live and learn.