The reason most barcelonins come up to Tibidabo is for some thrills at this funfair, close to the top funicular station. Here you'll find whirling high-speed rides and a high-tech 4D cinema, as well as old-fashioned amusements including an old steam train and the Museu d’Autòmats, with automated puppets dating as far back as 1880. Check the website for seasonal opening times.
Bus T2A runs here directly from Plaça de Catalunya. Alternatively, take train line L7 to Avinguda Tibidabo, where the historic tramvia blau (daily June to early September, weekends year-round) takes you to the Funicular del Tibidabo, from where it's a quick zip up the hill.