There are several ways to get up to Tibidabo's church and fun fair.
Take the L7 train from Plaça de Catalunya to the Av. Tibidabo stop; from there hop on the Tramvia Blau (Blue Tram), laid out in 1901, to the new fast Tibidabo Funicular, the Cuca de Llum (2021) in Plaça Dr. Andreu.
The Cuca de Llum runs every day when the Panoramic Area is open except New Years, 6 January, Christmas and Boxing Day. Tramvia Blau runs when the fun fair is open, otherwise TMB Bus 195 follows the same route.
Another (cheaper) option: Tibibus (T2A) which runs direct from Plaça Catalunya (corner of Rambla de Catalunya) from 10.45 am onwards every day that the fun fair is open, the last bus returning after the park is closed (€2.95 one way).
Another Tibibus (T2B) departs from the Vall d'Hebron car park (Metro: Vall d'Hebron). If you use the car park (€4.20), the shuttle bus is free.
Image by marimbajlamesa