Just like wild Alaska but easier to hike, the mountains and forests around the small town of El Chalten offer gorgeous views and very enjoyable walks, despite the strong winds and quickly changing weather. This was my father's favorite location in South America.
Photo album available here: https://www.facebook.com/media/set/?set=a.735773836444790.1073741922.392545607434283&type=1&l=8962983004