The Chicago Diner is a really unique place to eat if you ever visit Chicago. They have been meat free Since 1983 with an all vegetarian, mostly vegan menu. We stop there every time we visit my cousin out that way. My personal favorite is their southwestern chipotle burger. Yumm Yumm. They even donate $1 from each meal to go towards prevention of animal cruelty. Good cause and good food. What an excellent combo!