From Buenos Aires, luxury yachts can explore Argentina’s Atlantic coast, sailing to vibrant Mar del Plata or upscale Punta del Este in Uruguay, just across the Río de la Plata. Adventurous travelers can venture to Patagonia’s dramatic seascapes, teeming with penguins, sea lions, and whales, or sail from Ushuaia, the "End of the World," through the Beagle Channel to Antarctica, marveling at glaciers like Perito Moreno and untouched icy wilderness.