Kids have it pretty good—they can live out their playtime fantasies on play structures ranging from elaborate castles to simple swings. Given resources like personal design consultations, online 3-D imaging, and user-friendly DIY plans, their parents get to play too.Barbara Butler
, San Francisco-based artist and builder, hones the art of magical spaces. She creates custom play structures, incorporating natural features that might otherwise hinder design. Here, a two-story playhouse and large tree share the hillside.