Château Voltaire is the residence of the Voltaire family. The numerous children of the Master of Paris live there at any rate, thought the Master himself seems to prefer to reside in his rooms in the Awful Tower. Perhaps this should come as no surprise, considering how [ noisy and embarrassing] [[Chronology - Volume #|✣ ]] his offspring are. Colette Voltaire brings Agatha to stay there during the latter's time in Paris.