Whole Foods is an American supermarket chain exclusively featuring foods without artificial preservatives, colors, flavors and sweeteners (although I am not sure if everything is 100% organic there anymore). For anyone who has specific dietary needs, Whole Foods is the place to go. They have a lot of organic and gluten free food items. There is also a deli section where you can order hot food like grilled sandwiches, burgers, pizzas as well as salads. You can also order fresh fruit juices and vegetable and superfood smoothies. They also have a buffet-like section called Food Bar, where you can choose from a great variety of Chinese, Indian and continental food items.
Also, check out my post on Trader Joe's.