Comisión Nacional de Energía Atómica -CNEA- (National Commission of Atomic Energy). Av. del Libertador 1429, Buenos Aires. The original building, a school built in the mid 1930s, was significantly expanded for use as CNEA headquarters in 1952.
Argentina has no "freedom of panorama" provision in its copyright law. At least some think there is de facto freedom of panorama in Argentina regarding buildings:
It is uncontroversially accepted that buildings can be reproduced by paintings or photographs, without this reproduction infringing copyright.
Se ha admitido pacificamente que los edificios puedan ser reproducidos mediante pinturas o fotografías, sin estimarse que esta reproducción lesione los derechos de autor.
— Dr. Emery, Miguel Angel (professor of intellectual property law in Argentina), Propiedad Intelectual, Astrea Publishing, 4th. edition ISBN9789505085231. p.40 op cit