Serena Williams opened up her waterfront home in Florida for the March cover of Architectural Digest.The 23-time Grand Slam singles champion purchased the 14,500-square-foot property five years ago, enlisting the help of her sister, Venus Williams, to help turn the estate into her dream home.“I was moving away from Venus for the first time in my life, so I wanted it to be really meaningful,” Serena told Architectural Digest in their March cover story.