Chateau Felix is a reasonable sized house with a front near Baccarat. It is reachable with the zoom spell. In the grounds are cages containing great sabrecats, which you can ride if you accept the sidequest here. Once you have done the sidequest the owner of the Chateau gives you 'Baumren's Bell ', an item which allows you to call a great sabrecat wherever you are, with only a few exceptions, e.g. the Isolated Plateau. Once the sidequest is complete the Chateau is pretty much useless, as the conversations do not change, and there are no extra side quests. Whats more, you cannot ride one of the great sabrecats in the Chateau once you get Baumren's Bell.