The San Francisco Envy Chain - NYTimes.com. Backyard.
Base unit with full length of overhead monkey
Secret Playroom: Indoor rock climbing wall in child's room that leads to a fort! Built-out attic space, converted to play room.
Home climbing wall. this would be good somewhere where the noise of you falling/weight of you falling won't be too much! Comments about making a homemade wall here : http://www.reddit.com/r/pics/comments/1w1hib/good_use_of_attic_space/
Indoor trampoline with foam pit and rock climbing wall!