带5岁孩子去巴赛罗那玩,地铁和公交车是否需要买

Children under 4 travel free on public transport whereas children of 5 and over pay the same ticket price as adults.http://www.kidsinbarcelona.com/visiting/getting-around-town

不要。我去年8月份带5岁儿子买了个T10，小孩免票。