A slide is a great way to add fun and uniqueness to your two story deck.
Built-ins at the stair landing in 4 Bed House Plan sq. with walkout basement Architectural Designs, ---- bookcase at stair landing?
Refacing basement walk up- Custom egree from basement with landscape walls by Darlington Designs
The Complete Guide to Finishing Basements: Projects and Practical Solutions for Converting Basements into Livable.