Opal City

Opal City is a city located in the United States.

Behind the scenes

 * Opal City is a fictional city created for the comic book DC universe.
 * In the DC comics, Opal City is a city in Maryland, home the hero Starman (and his descendants) and their archenemies, including the Mist. Elongated Man is another notable character that has lived in and called Opal City home for a period of time.
 * Opal City also exists in the Supergirl TV show, where it is mentioned as the home of Cat Grant's older son, Adam Foster.