 The city will host the 2021 FIBA Under-19 Basketball World Cup.The backbone of Helsinki's motorway network consists of three semicircular beltways, Ring I, Ring II, and Ring III, which connect expressways heading to other parts of Finland, and the western and eastern arteries of "Länsiväylä" and "Itäväylä" respectively.While variants of a "Keskustatunneli" tunnel under the city centre have been repeatedly proposed, the plan remains on the drawing board.