Metro Line B in Rome Line B is a metro line serving Rome, Italy, and part of the Rome Metro. Despite its name, Line B was the first line to be built in the city. It crosses Rome diagonally from north-east, starting at Rebibbia and at Jonio stations, to south, terminating at Laurentina, in the EUR district. It crosses Line A at Termini station. The line has 26 stations and is shown in blue on Metro maps. From Wikipedia
