Megalopolis (Earth-X)

Megalopolis is a city built on Earth-X. It is Earth-X's version of New York with many of the same features but a little more advanced in technology.

An Old World Renewed
Only a few centuries after the birth of the New Men, a team of adventurers went looking through old catacombs from the Old Era, not stepped foot in since the collision. These adventurers went deep underground where they discovered many artifacts of the old city known as "New York", including blueprints and maps of the city and its layout. With their findings, the seven men founded Megalopolis, a city built around the ruins of New York. Along with the blueprints, they also discovered several dozen books, informing them of the ways of the Old World. With these, they filled the Great Megalopolis Hall of History and Literature (though, many just call it the Library or the Hall of Books).