Atherton is the epitome of quiet luxury, topping the lists of the wealthiest zip codes in the country year after year. This secluded enclave covers just five square miles and is almost entirely residential, with zoning regulations that only allow for one single-family home per acre. Houses are tucked away behind hedges and unobtrusive fences, with no sidewalks in sight, and hidden behind acres of leafy oak and magnolia trees. Though Atherton is home to immense fortunes and bold-faced names, the vibe here is far from flashy — Atherton houses are almost demure in style, emphasizing indoor-outdoor living and drawing inspiration from California’s architectural history. There’s no commercial zoning here, though the Menlo Circus Club, established in 1922, has equestrian facilities, pools, tennis courts, a gym, and a clubhouse with dining. For more expansive shopping and dining options, it’s just a five-to-ten-minute drive to Menlo Park or Palo Alto.