*The Obelisk was built in May 1936 to commemorate the 400th anniversary of the first founding of the city. It is located in the center of the ''Plaza de la República'' (Republic Square), the spot where the Argentine flag was flown for the first time in Buenos Aires, at the intersection of Nueve de Julio and Corrientes avenues. Its total height is  and its base area is . It was designed by architect Alberto Prebisch, and its construction took barely four weeks.