Backyard Water Garden, Elaborate Play Houses, Renovating Town HomesTravis Mattern turned his back yard into an old-fashioned swimming hole complete with a swimming cave, hot tub and patio. Jill and Ken DeLisle build a miniature version of the family home that includes climbing bars, rope swing and redwood jungle-gym. Gail and Larry Hammerberg build a play house for the grandchildren complete with an upstairs bedroom furnished with a wooden box bed and garden fence headboard. Dan Spalding bought an entire building and enlisted friends to help him turn it into four two-story town homes. After a honeymoon in Hawaii, Kelly and Joey Nilges return home and turn their living room into a tiki lounge.