The Fontaine d’Eau Chaude was the first fountain built on the Cours Mirabeau — in the 1600s. The hot water (34°C/64°F) comes from the hot springs of Bagniers. There are current photos here and here, showing it still covered in moss.
The final moments before nightfall. . .
These photos were taken yesterday about 6:20 p.m. — standing on the center steps looking down to the lower lawn and out to our view of the city and Mt. Kigali.