Not to be mistaken with curling mentioned above, which was linked with Scotland, actually I think it comes from one of the Scandinavian countries.
The greatest sport on earth is Hurling from Ireland, it is simply mighty. It is the fastest field sport in the world, it involves two teams of fifteen men with big sticks call hurlys bathering their way around a pitch with a sliotar(more or less like a baseball) catching the sliotar at high speeds, with a goal at either end. I know I am not explaining it to well, but it is a codified form of an ancient form of Irish warfare. Historically the sliotar used to be large stones to take out your enemy at long distance, and then when you got into close combat you smashed their sculls open with the hurly (stick) think braveheart. The nearest way to explain it is some kind of cross between Football (soccer), American Football, Ice-Hockey, Lacrosse & War. Yet the players also manage to play with an incredible grace and agility. There is absolutely no padding used by the players and only about 20% of players ware helmets, & that is a dramatic increase in recent years. Even then the helmets are made of a very light plastic less than about a half centametre thick (or about an eight of an inch or less).
Another great Irish sport is Gaelic Football, which has the exact same rules (well almost) but instead of a hurly and slioter you use a football(round football).
Normally when asked to explain the two sports I say Football (Gaelic) is like the Gods in hand to hand combat, while hurling is the same but the Gods now have projectiles and very big sticks.