Ice skating is a type of sport. People wear special shoes to skate on ice. These special shoes are called ice skates. Ice skates have narrow pieces of metal on the bottom of the shoes. People balance on these pieces of metal. People can move on the ice from place to place by sliding on these metal rails on the bottom of their ice skates. Professionals compete in ice skating competitions. A famous ice-skating event is the Elfstedentocht, held in Friesland every year.