The main square is the heart of the Medina and entrance to the Souks but there's nothing spectacular about it. It's large, noisy, has a very strong odor and you have vendors walking right up in your face and trying to force something into your hands. We actually had to physically run away from one man trying to force us to buy things, because in Marrakesh once you touch it you buy it. There's nothing impressive there at all, just a bunch of wagons and street vendors that will rip you off.
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