Address: Av. Angel Gallardo 490 – Caballito
It is located in Parque Centenario, the geographical center of the city. It is devoted to the history of our flora and fauna. It is also the National Investigation Centre of Natural Sciences, and owns a library that keeps a large number of national and international productions. It opens everyday from 2pm to 7pm except for holidays, and offers guided visits for schools and families. The entrance fee is $2.