World Cup 2014: Argentina fan on being behind enemy lines
5 July 2014 Last updated at 01:00 BST
Santiago Halty was a little boy when his home country Argentina lost the World Cup final to Germany in 1990.
He knew back then that one day he would have to experience the tournament atmosphere himself.
Two decades later, he made it to Brazil as the founder of a company that sells fair-trade footballs and apparel.
For the BBC's Real Fans series, he talked to the BBC's Franz Strasser about roaming the streets of his country's arch-rival in his blue and white jersey.