Chamberlain City is a fictional location in the Landmark Universe. Located on the Eastern Seaboard of the United States, it is home base for a number of Landmark characters including Excelsior, Ace Brogan, Victory Girl, Masque, Moon Maiden, Major Triumph, American Ego, and Gothique. Housing a population of over 40 million, it is a multi-cultural center representing all races, ethnicities and demographics. Built on the shores of the Kingston River, it is divided into three main regions; Greater Chamberlain (East shore), Radcliffe (West shore), and Empire City (Northern districts).
Originally founded by European settlers in the colonial period, Chamberlain has a long history stretching back to the early 1700s, enduring successive waves of prosperity, disaster and conflict. Throughout the 20th century, it has seen increasing levels of superhuman activity, particularly since the so-called "mystery man" explosion of the mid-thirties. Conspiracy theorists claim that Chamberlain is a major transport hub for extraterrestrial and supernatural entities. Although dismissed as crackpots by the general community, recent events suggest they are far closer to the truth than anyone ever imagined.