A rock climbing wall? so cool. Would be ten times cooler if it led to a secret space, wonder if it does?
A sweet little outdoor playroom would be perfect for messy crafts and games. I could see my kids spending hours in something like this!
I'm a fan of the slide trend as well; although I would probably use it to throw laundry down the basement (Of course, I always was the kid who wanted a laundry chute in my house!)
A pulley system is so simple and fun. How great to deliver secret notes to the top bunk at sleepovers or up the stairs for a spy game.
I saw a mouse house like this a few years back while watching House and Home and thought it was the coolest idea, sadly I can't find the picture to show you guys! This one is almost as good. I have recently found out that someone in London has one of these in their house, I am dying to see it!
Have you built any cool spaces for your kids you would like to share? My kids would love spaces like these, but are happy with a couch fort as well.