On the upper floor of an inconspicuous building is this well (Bir in Arabic) with a camel powering the water wheel. Folklore has it that this well is connected to the one in Mecca.
I have a video of the camel working the water wheel.
I loved the brickwork of the old buildings in Tozeur.
This type of shop could be in any Souk in any Arabic country. They are, though, very colourful.