Get tickets and join the fans at a game at Gelora Bung Karno Stadium. If there's nothing on while you're in the area, you might like to check if there's a guided tour of the grounds.
This sporting facility is in Jakarta, a place that has plenty of things going for it! National Monument, Jakarta Cathedral, and Grand Indonesia are other fine sightseeing choices nearby when you're done at Gelora Bung Karno Stadium.