百年紀念公園

Parque Centenario is an extensive public park in the Caballito district of Buenos Aires, Argentina.

Hospital Naval is a building in the Caballito section of Buenos Aires designed by architect Clorindo Testa in 1977. Serving Argentine Navy personnel and facing Parque Centenario, the institution was established in 1947, and its current, modernist building was inaugurated in 1981. The 30,000 m² (320,000 ft²) hospital is one of the best-known examples of brutalist architecture in Argentina.

The Leloir Institute is a non-profit research center in Buenos Aires specializing in biochemistry, cellular biology, molecular biology, and related activities.

Asociación Argentina Amigos de la Astronomía (AAAA, A.A.A.A. or asaramas; the Argentinian Association of the Friends of Astronomy; obs code: 834) is an amateur astronomy civil association based on Buenos Aires, Argentina, with the aim of spreading astronomy. It was founded on January 4, 1929 and its field courses are held on related subjects, research in collaboration with professional bodies and printed publications or multimedia, and recreational activities for the general public.