I visited Argentina when cycling from Santiago to Ushuaia. This involved going back and forth across the border numerous times. Some of these albums switch between Chile and Argentina.
Argentina photos are in several albums on Picasa – take a look at these. You may prefer to follow the links to the albums on Picasa.
Around Buenos Aires
Puerto Madryn
Around Ushuaia
Punta Arenas to Ushuaia
El Chalten to El Calafate
Villa O’Higgins to El Chalten
Trevelin to Coihaique
Bariloche to Trevelin
San Martin to Bariloche
Villaricca to San Martin