Avenida 9 de Julio, Central avenue in Buenos Aires, Argentina

Avenida 9 de Julio is a large thoroughfare in downtown Buenos Aires that stretches roughly 3 kilometers and consists of multiple parallel lanes on each side. Between the roadways lie planted median strips with trees and footpaths that divide the entire ribbon into separate sections.

The avenue was approved by National Law 8,855 in 1912, but work only began on 20 April 1936 under a revised plan; the earlier scheme had foreseen a 33-metre-wide boulevard. Construction of the MOP building at Avenida Belgrano started on 15 November 1934 and was finished in 138 working days, inaugurated in September 1936. The first 500-metre section opened on 12 October 1937 under President Agustín P. Justo, when the road received the name 9 de Julio; it reached the MOP building in 1947 and its full length in 1980.

Locals know the street as a symbol of the city and often meet at the Obelisk, which remains visible from both sides. On national holidays the roadway turns into an open stage for parades and concerts, while people crowd onto the wide median strips.

The Metrobus runs through the center lanes, while Metro Line C operates beneath the street and serves several stations along the route. Crossing the entire width requires multiple traffic light cycles, so pedestrians should allow enough time.

The name recalls July 9, 1816, the date of the Argentine declaration of independence. The width of roughly 492 feet (150 meters) makes it one of the widest urban streets worldwide, with some pedestrians experiencing it as a small journey.