Go to Ushauia first! The World’s End! See nature and enjoy a great little town. Then El Calafate to see the Glaciers. Awesome. We then went to Buenos Aires. What a great city. Great food, architecture, shopping, and people. Take a city tour. And if you want more, take an Architecture tour. And of course, do a Tango experience. Skip the dinner/Tango show and hire someone to take you to a real Tango Bar! The locals are friendly and accepting of first time Tango dancers!