Barcelona Metro line 1 Line 1, shortened to L1, coloured red and often simply called Línia vermella, is the second oldest Barcelona Metro line, after line L3. It is the longest line of the Barcelona Metro, and links L'Hospitalet de Llobregat and Santa Coloma de Gramenet. Originally operated by the independent Ferrocarril Metropolitano Transversal de Barcelona, it is today operated by Transports Metropolitans de Barcelona (TMB) and is part of the ATM fare-integrated main transport system. L1 is the only metro line in Spain to use Iberian gauge tracks, as used by most Spanish main line railways. Barcelona Metro line 4 Line 4, also known as Trinitat Nova – La Pau, usually called "línia groga", is a line in the Barcelona Metro network operated by TMB, and part of the ATM fare-integrated transport network. It serves the northern districts of the city, and it is being extended to the new major metro and rail stations Estació de la Sagrera and Sagrera-Meridiana. Trinitat Nova (Barcelona Metro) Trinitat Nova is a Barcelona Metro station, named after the nearby La Trinitat Nova neighbourhood, in the Nou Barris district of the city of Barcelona. The station is served by lines L3, L4 and L11. Sant Andreu Sant Andreu is one of the ten districts of Barcelona's districting in 1984. It was named after a former municipality in the plain of Barcelona called Sant Andreu de Palomar, the largest in the area, which makes up nowadays the bulk of a neighbourhood bearing the same name. A separate district, Nou Barris, includes some of the former area of Sant Andreu de Palomar. Canyelles (Barcelona Metro) Canyelles is a Barcelona Metro station, named after the nearby Canyelles neighbourhood, in the Nou Barris district of the city of Barcelona. The station is served by line L3. Passeig de Sant Joan, Barcelona Passeig de Sant Joan is a major avenue in the Eixample and Gràcia districts of Barcelona. It was named after an older street carrying this name, also known as Passeig Nou, built in 1795 around the glacis of the Ciutadella fortress. Plaça d'Espanya, Barcelona Plaça d'Espanya is one of Barcelona's most important squares, built on the occasion of the 1929 International Exhibition, held at the foot of Montjuïc, in the Sants-Montjuïc district. Trinitat Vella (Barcelona Metro) Trinitat Vella is the name of a station in the Barcelona metro network, currently served by the TMB-operated L1. It's named after the neighbourhood Trinitat Vella, in the Sant Andreu district of Barcelona, and the park of the same name. It is quite unusual in being one of the few stations with an attached building overground, which lies on the Nus de la Trinitat and links the neighbourhood with Parc de la Trinitat. Avinguda Meridiana Avinguda Meridiana is a major avenue in Barcelona, Catalonia, Spain, spanning parts of the Sant Andreu, Nou Barris and Sant Martí northern districts of the city. Originally planned by Ildefons Cerdà in 1859 to be one of the two most important thoroughfares in Barcelona, its actual role hasn't been exactly so but still has become a much transited route linking Parc de la Ciutadella with northern parts of Barcelona, crossing Plaça de les Glòries in its way, where it meets other two major avenues: Gran Via de les Corts Catalanes and Avinguda Diagonal. It absorbs the traffic coming from the AP-7 motorway, which makes it a densely transited area. The avenue goes through the following neighbourhoods of Barcelona: El Clot, Navas, La Sagrera, Sant Andreu de Palomar, El Congrés i els Indians, Vilapicina, Porta, La Prosperitat, La Trinitat Nova, Trinitat Vella and Vallbona, largely working-class areas of the city. Barcelona–Vallès Line The Barcelona–Vallès Line is an unconnected standard gauge railway line linking Barcelona with Sabadell and Terrassa via the Collserola mountain range, in Catalonia, Spain. Its name refers to the Catalan historical region of Vallès, whereby most part of the line runs. Plaça de Catalunya station serves as the Barcelona terminus of the line, where almost all its trains either start or terminate. The line then continues northwards and branches off twice before leaving the city limits. Its main route splits in two in Sant Cugat del Vallès, forming two major branches to Sabadell and Terrassa. It has 40 passenger stations in operation and a total line length of 48.1 kilometres (29.9 mi). Roquetes (Barcelona Metro) Roquetes is a Barcelona Metro station, named after the nearby Roquetes neighbourhood, in the Nou Barris district of the city of Barcelona. The station is served by line L3. Baró de Viver (Barcelona Metro) Baró de Viver is a station of the Barcelona Metro, in the Baró de Viver area of Sant Andreu, a northern district of Barcelona. It is operated by Transports Metropolitans de Barcelona (TMB) and served by L1. The station opened in 1983 as the line grew from its terminus in Torras i Bages towards the municipality of Santa Coloma de Gramenet. It is located under the southern side of the busy Nus de la Trinitat, next to the Besòs river bank. La Nova Esquerra de l'Eixample La Nova Esquerra de l'Eixample is a neighborhood in the Eixample district of Barcelona, Catalonia (Spain). Originally it formed a single unit, called Esquerra de l'Eixample, with the current neighborhood l'Antiga Esquerra de l'Eixample. Montbau Montbau is a neighborhood in the Horta-Guinardó district of the city of Barcelona, Catalonia, Spain. Vall d'Hebron Vall d'Hebron is a neighborhood in the Horta-Guinardó district of Barcelona, Catalonia, Spain.