Valencia, Spain Les Troyens Palau de les ArtsReina Sofía (October 31–November 12). “La Fura dels Baus”translates loosely as something like “the ferret of the ravine,” but it’s thename of an avant-garde Catalan theater group that regularly offers provocative, beguiling, andwholly original takes on the opera and theater repertory. The still-new theater in Valencia, Palaude les Arts Reina Sofía, for whom money appears to be no object, is bringing them in to stageone of the most sprawling of Berlioz’s many sprawling masterpieces, with the tireless Russianconductor Valery Gergiev in the pit.