The ice sport of curling was invented by the Scottish in the early 16th century. The first known written reference to the sport was from records at Paisley Abbey in Renfrewshire, Scotland. A curling stone inscribed with the year 1511 was found in a drained pond in Dunblane, Scotland.
Curling involves sliding heavy stones, known in the game as rocks, across an ice sheet towards a target area, called the house. Modern curling stones typically have handles to control the rotation of the rock, which can cause a curve along its path on the ice. Besides the rock thrower, two other team mates on a curling team have brooms that they use to sweep the ice to alter the speed, distance and trajectory of the shot rock.