Relish face-to-face encounters with two of the world’s last great frontiers – Southern Patagonia’s majestic fjords and glaciers, and Torres del Paine’s stunning scenery – on a remarkable 16-day small group journey showcasing South America’s diversity.  Discover vibrant Buenos Aires during a three-night stay, seeing its highlights and attending a performance at a premier tango house.  After exploring Ushuaia, the world’s southernmost city, board the comfortable M/V Stella/Ventus Australis* for an extraordinary four-night cruise through the storied Ti