Oxegen Music Festival Oxegen Once one of the most famous festivals in Ireland, is no longer an event that is being held. Oxegen was one of the most famous music festivals in Europe since it was first held in 2004. The event usually took place at Punchestown Racecourse in Co. Kildare in the Republic of Ireland and people come from all over Europe came to enjoy some of the top headliners, including Florence + The Machine, Foo Fighters, Amy Winehouse and more. Most people stayed for the days of the shows and pitched tents, but there were also those that just came for the day. Since this festival is no longer available, check out some of the other summer concerts in Ireland for 2015 and book your flight to Ireland with eDreams.