Barcelona Metro line 5

Line 5, currently known as Cornellà Centre – Vall d'Hebron, its termini, and often called "Línia Blava" (Blue line), is a rapid transit metro line belonging to the Barcelona Metro network operated by TMB, and part of the ATM fare-integrated transport network.

Overview
It opened in 1959 as the line 2 (originally). Line 5 is 18.8 km long and has 26 stations, from Cornellà to Vall d'Hebron in the northern part of Barcelona, where it meets L3.

Chronology

 * 1959 – Sagrera-Vilapicina section opened (as the former L2)
 * 1967 – Vilapicina-Horta section opened (as the former L2)
 * 1969 – Collblanc-Diagonal/Provença section opened.
 * 1970 – Diagonal/Provença-Sagrera-Vilapicina section opened. The line then known as L2 integrated into L5.
 * 1973 – Collblanc-Pubilla Cases section opened.
 * 1976 – Pubilla Cases-Sant Ildefons section opened.
 * 1983 – Sant Ildefons-Cornellà section opened.
 * 2010 – Horta-Vall d'Hebron section opened.
 * 2021 – Ernest Lluch station opened.