Forget the front porch, white picket fence and curb appeal, the backyard is all that matters in exterior space.
You may think that your backyard has some nice features. Maybe you have a pool, grill, or a nice patio to entertain your friends -- but does your backyard have a lazy river, observatory or a roller coaster? We didn't think so.
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At least there's the Internet, so you can admire these spaces in envy, fantasizing that some day one of these ridiculous and awesome backyards will be yours to enjoy.