Port Vell and Europe's largest aquarium – Aquarium Barcelona, containing 8,000 fish and 11 sharks contained in 22 basins filled with 6 million litres of sea water. The Maremagnum, due to being situated a designated tourist zone, is the only commercial mall in the city that can open on Sundays and public holidays.
Barcelona is served by a comprehensive local public transport network that includes a metro, a bus network, two separate modern tram networks, a separate historic tram line, and several funiculars and aerial cable cars. TheBarcelona Metro network comprises eleven lines, identified by an "L" followed by the line number as well as by individual colours. Most of the network (nine lines) is operated by the Transports Metropolitans de Barcelona (TMB), but three lines are FGC commuter lines that run through the city. When finished, the L9 will be the second longest underground metro line in Europe with 42.6 km; only shorter than London's 76 km Central Line.
The Estació del Nord (Northern Station), a former railway station which was renovated for the 1992 Olympic Games, now serves as the terminus for long-distance and regional bus services.
Another company, TRAMMET, operates the city's two modern tram networks, known as Trambaix and Trambesòs. The historic tram line, the Tramvia Blau, connects the metro to the Funicular del Tibidabo (both operated by TMB). The Funicular de Tibidabo climbs the Tibidabo hill, as does the Funicular de Vallvidrera (FGC). The Funicular de Montjuïc (TMB) climbs the Montjuïc hill. The city has two aerial cable cars: Montjuïc Aerial Tramway (to the Montjuïc castle) and Port Vell Aerial Tramway that runs via Torre Jaume Iand Torre Sant Sebastià over the port.
Barcelona has a metered taxi fleet governed by the Institut Metropolità del Taxi (Metropolitan Taxi Institute), composed of more than 10,000 cars. Most of the licences are in the hands of self-employed drivers. With their black and yellow livery,
