The capital of Mauritania is Nouakchott, which was founded 1904. Nouakchott has been the capital since 1960.
Although Nouakchott is not the largest city in Mauritania, it functions as: Houses the Presidential Palace.
Nouakchott is located at 18.0735° N, 15.9582° W, at an elevation of 15' ft.
Source: https://flic.kr/p/seiHyw