Ciutadella | Vila Olímpica (Catalan pronunciation: [siwtəˈðeʎə ˈβilə uˈlimpikə]) is the name of a station in the Barcelona Metro network, as well of a nearby Trambesòs station in the Sant Martí district of Barcelona. It's named after one of Barcelona's major parks, Parc de la Ciutadella, and Vila Olímpica, a neighbourhood in the immediate vicinities. It's served by L4 (yellow line), and tram route T4, of which it is a terminus. It was built in 1977 under Parc de Carles I. It was closed between 1991 and 1992 because of infrastructure improvement with the occasion of the 1992 Olympic Games, and again as of mid-2007 due to improvement of L4.