Carrer d'Aragó is a major thoroughfare in Barcelona, one of the widest and busiest roads of the districts it cuts through, especially Eixample but also Sant Martí. Its creation was passed in 1863, and was part of Ildefons Cerdà's urban plan, appearing as L Street in 1867, even though that name was never approved. Instead, another name, a reference to the Crown of Aragon, was proposed in 1863 by Víctor Balaguer, who was commissioned by the city council to rename all the streets in the area. Its Spanish-language rendition, Calle de Aragón, was the official designation back then. It starts in Carrer de Tarragona and it becomes at the intersection with .