On our way to BA, we stopped at Gualeguaychu. We intended to have one night here but it didn't look too pleasing. So instead we did what we had stopped for and had a look at the open air train museum. It turned out to be one train and a carriage, but as bare as it sounds the carriage was filled with very genuine relics of an industrious era (specifically Englands)
Another 3 hours on our last bus and into BA.