Zein thought Trinity was big enough already—until he came to Mortix's compound. Or rather, it was a hill.
As one of the four green-zones in the Eastern Federation, Althrea was home to several prominent guilds' headquarters. Even Celestia—whose main domain was the Capital—had a branch there. That being said, for Althrea, the representative guild nowadays would be Trinity. There were two reasons for that; one was the eradication of the Vaskis and the downfall of the Golden Viper guild four years ago, and the other was because of Radia Mallarc.
A whole hill on the eastern side of Althrea was home to the city's most prominent family, the Mallarcs. With their mansion at the top like a jeweled crown, the group's headquarter, the company buildings, as well as the worker's mess were decorating the hill like Althrea's own mini-town district.
In fact, the name of the city itself came from the family ancestor; Althrea Mallarc.