Indianapolis is a city in the Midwest the United States of America. It is the capital and largest city of the U.S. state of Indiana. It contains its statehouse, Union Station, zoo, Canal Walk, Soldiers' and Sailors' Monument, stadium for the Colts, and approximately 128 kilometers south are the Bluespring Caverns.
Indianapolis was visited by Apollo, Leo Valdez, and Calypso while searching for the god-emperor who ruled the central U.S. They found that the emperor was Commodus and that he intended to rename the city after himself and make it the capital of his brand new empire. This included leveling a large part of the city so it could be rebuilt according to Commodus' wishes. Located above the Union Station, the city also houses the Waystation - a refuge for demigods, monsters, and Hunters of Artemis - where they could take shelter if needed.
Apollo mentions the city when reflecting on the events that occurred during his time in the city.
After becoming a god again, Apollo goes to the city to check on the residents of the Waystation.