Here it's some ideas and suggestions on things you can do:
Explore Tierra del Fuego National Park
Tierra del Fuego is one of the most spectacular places you can visit on the east coast of Argentina as it’s located at the southernmost point of South America (literary at the end of the world). Tierra del Fuego National Park offers plenty of opportunities for outdoor pursuits and the stunning landscapes and amazing wildlife is truly second to none!
You could book an organized tour of Tierra del Fuego national park in Ushuaia with tour operators such as Ripio Turismo, or Comapa Turismo. Although, you can inexpensively organize a 3 day trip to Tierra del Fuego national park yourself. You can get to the park by bus from Ushuaia and stay in lodging or camping accommodation.
Walk with Penguins
One of the coolest things to do on the coast of Argentina it's to visit a colony of penguins in the the Patagonia region. One of the best places for viewing penguins has in Punto Tombo, which boasts a huge colony of Magellanic penguins.
This colony of Magellanic penguins is located not far from the south of Trelew and it’s actually one of the largest in the world. You can book an organized tour from Trelew to see the penguins, though hiring a car is definitely the cheaper and better option since entry to penguin colony is roughly $10. Once in the park, you’ll be able to wander around the place freely crossing paths with the penguins.
Fly out to the Falkland Islands
The Falklands Islands is no doubt one of the top tourist destinations in South America for cruises, and it’s definitely one of the top things to do on the coast of Argentina. One of the most popular ways to get to the Falklands is by plane with LAN Airlines.
LAN Airlines operates direct flights to the Falklands from Buenos Aires, though you can also book a flight from Rio Gallegos. Once in the Falklands, you’ll be able to book organized tours such as wildlife tours that will take you around the islands and out to sea to see cool marine life such as dolphins. Besides tour companies, you can also cheaply hire a four-wheel drive and explore places such as battlefield sites of the Falkland War.
Hit the Dunes
Sandboarding is definitely one of the most popular outdoor activities Argentineans get up to since it's inexpensive and a lot of fun.
There are miles of dune areas to be found along the coast of Argentina such as the ones between Mar del Plata and Bahia Blanca (province of Buenos Aires) where you’ll find plenty of nice spots for sand boarding such as Mar del Sur, Necochea and Monte Hermoso.
Learn to Tango
A visit to Argentina wouldn’t be complete without taking the opportunity to learn about the famous Tango dance, which is revered all across Argentina. Buenos Aires is certainly the capital of Tango and you'll encounter Tango even on the streets of Buenos Aires. BA also has lots of Tango schools offering short programs that teach you the basics about the dance and Tango culture.
Tango schools, of course, aren’t the only places to learn this elegant dance. There are also Tango bars and theater shows such as Evita Vive where you can soak in an evening of Tango. There are also Milongas (tango clubs) in Buenos Aires such as La Viruta (district of Palermo), Lo de Celia and Dandi in the district of San Telmo.
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