The Roivas Mansion is located on the Roivas Estate in Rhode Island, USA. In addition to being the location of several chapters, it serves as a hub where the player controls Alex in between chapters.
The mansion was built when Rhode Island was still a British colony. It is not known when exactly it was built, but it appears to have been lived in for quite some time when Maximillian Roivas inherits it in 1760 AD. Prior to that date, it was the home of Aaron Roivas, Maximillian's father. Aaron discovered that the mansion was built directly over the cavern containing the ruins of Ehn'gha, and it is unknown if the Roivas's responsible for the mansions construction chose the location deliberately knowing this.