Adrar’s main attraction must be the strange organisation of the town. In the middle there is a meaningless big square,- it cannot be used to anything beyong parades that hardly ever take place anyway. And out here in Sahara, big open squares are the worst thing there is, nowhere to hide from the sun.
There are easy to find traces of the old system of underground water channels. These traverse the entire oasis, and shall in the times before modern systems were implemented, have been as long as 2,000 km in this area alone.
There are two hotels of OK standard, as well as a youth hostel. Eating is more or less in the same places as where you sleep.