New Macross City was a city built on Earth following the Zentraedi attack that destroyed most of Human civilization on the planet in 2011. The city was built around a massive crater where the SDF-1 landed after the destruction of Dolza's flagship. The crater later become known as Lake Gloval.
Final battle of the First Robotech War
Eventually the lake dried up, and the city was deserted. It's remains were at the center of the Second Robotech War.