Nagada was the primary city on Abydos. The city was made of stone, with large walls and a single wooden gate. It was designed to prevent sandstorms from overwhelming the city. It was apparently common for Death Gliders to make strafing runs on the city. (Stargate)

Nagada was never seen after the original movie, but was eventually destroyed along with the rest of Abydos when Anubis fired on it with his superweapon. (SG1: "Full Circle")