The size of the court varies according to the level at which the game is being played, but the features of the court remain the same for all. The court is split into two by a center line, around which are two center-circles. Each end of the court has a free-throw line, bordered by free-throw lanes. These lanes both have a semicircle with a 6ft radius from the center of the free-throw line. The boundaries of the court are marked by the sidelines and end lines, and there should be at least 3ft of unobstructed space beyond them. The court must have a hard surface.