Sail across the bay from Brickell and Coconut Grove and drop anchor in Key Biscayne, a white sand refuge for sunbathers embracing island-style luxury. Key Biscayne's serene pace separates it from the noise of Miami's mainland destinations, but there's actually little distance between this dream-like destination and Downtown. In Key Biscayne, the city's CEOs sip Mai Tais in waterfront mansions and play the front nine on golf courses that seem to grow out of the sea