EDIT For all those who are saying it will rot, read the post
1. the framing is H4 (the stuff they make fence posts and telegraph poles from -- yes it will rot but not in my life time
2. The panels are MARINE GRADE ply - they build boats from that!!
3. The rest is decking - that is designed to be outside !! ;-)
4. I built it in Oct 2015 and no rot so far
I had a large pile of spoil and topsoil from the build of our pool and wanted to put in some seating and storage as well as a retaining wall. So I thought why not combine the lot!