14. Lou Mitchell’s, Illinois
Since 1923, Lou Mitchell’s has been a cherished starting point for Route 66 journeys from Chicago. Famous for its hearty breakfasts, fresh donuts, and strong coffee, this classic diner radiates warmth and tradition. Stepping inside means stepping into a timeless space where the clatter of dishes and friendly greetings evoke the golden era of American diners—making it a must-visit for nostalgic travelers and locals alike.
