Purchase a ticket to watch a game at Belfield Bowl. If there's nothing happening while you're in town, you might like to check if they offer a tour of the grounds.
If you're planning to stick around a while in Dublin, Belfield Bowl is a good place to kick off your sightseeing. This sporting facility is one of numerous attractions that'll keep you on the go here. Guinness Storehouse, Trinity College, and Aviva Stadium are also ready to be explored nearby.