London, UK. Photo: Andrew Spode Miller

Not so much a ladder, but good use of what was available. Used a
couple of shelving brackets and some left over wood from the decking
so it didn't look out of place. The sil to the window wasn't quite
deep enough so I cut a piece to length and then screwed through the
plastic sil into the wood. Now all the cats can happily climb onto the
roof and through my bedroom window :)

//Andrew