Côte d'Azur
From Halopedia, the Halo wiki
Summary
Côte d'Azur was the main population center of Sigma Octanus IV, a UNSC colony world. The Covenant launched an attack against the system in hopes to retrieve an alien artifact that was in a museum on the planet's surface. The entire city was destroyed when the Spartans detonated a nuclear device to level the city to keep the Covenant from finding anything else of value. However, the planet remains in Human hands.
