Want to build a bookcase Window form.? Just bought a loft that has AMAZING window. They start at 4...

Just bought a loft that has AMAZING window. They start at 4 feet large and go to 12 foot.
My idea is this between a wall and a "column" wall is one of these said window.
There is 12 inches of cove like space. The windowpane is also another 6 inches from the wall.

I want to build a Bookcase in that space that match with the windowsill consequently put cushions on top and have it in safe hands enough to sit upon. I would be using a small stepladder type thing to go and get to the top of the seat.
Any suggestions
Ron Hazeltons "How to build a window seat". Video on his pattern site. Also, a lot of great accepted wisdom. Or Try HGTV.com


go this outmoded house . com
really
they have closely of designs and directions for do it your selfer's
Answers:    buy some cabinet kitchen base are 24 within deep and 32 surrounded by high hip bath vanity are 29 contained by high and 19 contained by deep you can draw from different widths to arrange how ever you want them take doors sour to use as bookcase. you can get deficient and stain to match window.put plywood on top cushion on sit relax enjoy a correct book