You've been framed.

Who thinks up all these rubbish titles?
Anyway, having laid the ground cover, and attached it to two sides, this was step one:

 Yesterday's work was the get up the main structure, and this is how we left it at the close of play (well, roughly - the end bit that's on the ground in this picture was actually attached, as was the slide):

 This morning saw the addition of the monkey bars...

 ...followed by the first bit of roof (I can stand up under it)

 ... and the other bit of roof (yes, there's a bit of wood missing)

 This is the view from the climbing frame, complete with little boy dying to go on it.

 At last!  Play time.