I went to BA for my hols last summer (their winter). One of the most startling parts of BA is Recolleta graveyard. Sounds a bit macabre but it is a fasinating place. There are no graves with head stones but tiny street after street of mausolems. And a hoard of slinky cats! The only other thing I would say that you have to go to in BA is Freddo's ice cream parlour down in the renovated part of the docks. Dolce con Leche ice cream, can't be bettered!

George