When you visit Marrakech, you should visit Jemaa el-Fnaa which is an open area market during the day and at night. During the day you will see it as a fairly open area with a few temporary stalls and while we were there, there was a group of snake charmers. Note, if you are not interested in snakes, try to avoid walking too near, the snake charmers we saw were throwing snakes over passerbyers' shoulders in hopes of soliciting pictures which ends up being them asking for money from you.
At night, the square transformers and there are rows upon rows of stalls that pop up. Some that sell you food and snacks, others that sell you souvenirs and much more. Best of all, it is free!
Come back next Friday for another Past Point of Interest!