Located in the Intracoastal just off Williams Island in Aventura, Island Estates consists of two small islands featuring two and three story custom-built estate residences designed in the Mizner tradition of Palm Beach elegance, and reminiscent of old world Venetian palazzo-style architecture. Island Estates Aventura located between Miami and Fort Lauderdale, the upscale community of Aventura is the sparkling jewel of the Florida East Coast.