First, a shot of the whole thing... as it is right now. It's only about half finished...
This is the bottom part, which will be a fort-type thing. Only one wall is complete so far.
This is the upper part of the structure. Note the green handlebar grips. Thank you, Home Depot playground department!
Here is a view of the clubhouse wall from one side. It looks a little boring, but I will do something to spice it up. That square in the bottom left corner is a working door, which opens inward.
Here's the same wall, as seen from the inside. There are some built-in shelves (for rock collecting or whatever a kid wants to do with them). The Jenga blocks (purchased as a set for a total of 25 cents at a garage sale) are rotatable, and are intended to be part of a large, more elaborate marble run.
A close-up of the door. It has an acrylic "doorknob" (really a cupboard knob) that looks like one of those glass doorknobs. There's also a sliding lock... and I expect to add more locks to it, locks of different sorts.
Next up: Vertical posts for the upper deck's railing, another wall for the fort, and...?