A tour to Paris is not a tour to Paris without a visit to a market. Paris has a wide variety of markets selling flowers, food, antiques, toys, pets, and just about anything else you can think of. Take a look at The Traveling Professor's blog post to find out more about the best markets in Paris.
An essential part of a tour to Paris should be a visit to one of the many markets. There are probably hundreds of markets (called a marché) in all shapes and sizes offering everything from flowers to foie gras, baguettes to books, and Cabernet to Camembert. I’ve listed those that are most likely of the most interest to those on a tour of Paris and are easily accessible when taking a tour to Paris.