Gotham City https://en.wikipedia.org/wiki/Gotham_City
is a fictional American city appearing in American comic books published by DC Comics, best known as the home of Batman. Gotham City was first identified as Batman's place of residence in Batman #4 (Dec. 1940) and has since been the setting of most stories featuring the character.
The city is depicted as being in close proximity to Metropolis, with the vast majority of DC Comics references placing Gotham City specifically in the state of New Jersey.