The Charnon House was the residence of Silas Charnon, built by him and Cogsley. In the beginning of book one, it stands on a pillar at the beginning of a river, but, as it is also a huge walker, with controls based off of those of the colossus mech. is maneuvered out in order to reach the city of Kanalis in order to find a cure for Karen at the end of book 1. There you learn that it's official name is the "Choga Hoffa 5691". The Charnon house was left with a skeleton crew after the main group left for Cielis. At the end of Book Six, we see the house again, heading for the distress call from Lucien.