20,000 American visitors are in Dublin this weekend for a major football game.
The ‘Croke Park Classic’ which takes place tomorrow will see Penn State take on the University of Central Florida.
The event is worth up to €30m to the Dublin economy.
Croke Park spokesman Peter McKenna has claimed it is a huge sporting spectacle.
"It's going to start off with a really spectacular parachute jump, so 30,000 feet the match ball will come in" he said.
"You have the Dublin Gospel Choir, they're going to sing Amhrán na bhFiann and the Star-Spangled Banner".
"You have the marching bands, cheerleaders - so a whole series of razzmatazz," added McKenna.