CLUES
- This city was developed in the 15th and 16th centuries with the establishment of the Sultanate of Aïr.
- Its center, which is divided into 11 irregular sections, was an important crossroads for caravan traders.
- A 27-meter mud-brick minaret, the tallest such structure on Earth, towers above the city.
- This city is considered a center of culture for the Tuareg people.
ANSWER Agadez, Niger