The name translates as ‘twin (bathing) pools’. They are thought to date from the 6th century, but may also be from a slightly later period. In any case they are very well preserved.
A Glance at the Architecture of Downtown Casablanca
DrFumblefinger explores the architecture in “Downtown Casablanca”. Most were constructed in the period between WWI and WWII, and show art deco and art nouveau features combined with Moroccan/Moorish features.