Rising 67.5 meters above Plaza de la República, this monumental white obelisk commands the Buenos Aires skyline as an iconic symbol of the city. Designed by architect Alberto Prebisch and completed in 1936, the structure commemorates the 400th anniversary of Buenos Aires's first founding. Constructed of concrete and stone, its clean geometric form embodies early modernist principles while serving as a triumphal urban landmark visible across multiple neighborhoods. The obelisk anchors a major public plaza where pedestrians gather at street level, creating a dynamic interplay between the soaring vertical monument and the vibrant urban activity below. Illuminated at night and surrounded by bustling traffic and commercial districts, it remains one of Argentina's most recognizable civic monuments. Wikimedia Commons (CC BY-SA)