If you were thinking of a spring time trip to Buenos Aires, you're going to want to book the weekend of May 4, which coincides with the 13th round of the Torneo Clausura and the superclásico between Boca Juniors and River Plate. The event in question was listed as one of the Guardian's 50 sporting events to attend before you die. And that's sports in general. For soccer fans, it's probably in the top 10--top five if the game is played at the Bombonera, which can realistically be viewed as one of the world's foremost soccer meccas. It's not for novices though. Passions run very high, there is occasional violence (though only once, in 1968, were there fatalities) and tickets are extremely tough to come by. SI.com sent a writer last year; here is his report.