I went to Malba and the Museo de Bellas Artes. Bellas Artes was far superior to Malba, so if you can't make it to both, go to the B.A. There is so much to see you will need at least a couple of hours. Room after room of Latin art and another section with European art. You can check any bags at the security desk at the entrance for free. And there is no charge to enter the museum, but you may make a donation! The Malba cost $7 pesos!
Museo Nacional de Bellas Artes
'National Museum of Beautiful Arts'
Av. del Libertador 1473 Tel.: 4803-0802/8814/4691 firstname.lastname@example.org
Tuesday to Friday from 12.30 to 19.30 hs.
Sát and Sun from 9.30 a 19.30 hs.
Guided tour: Tuesday to Sunday from 17 y 18 hs.
The National Arts Museum is surrounded by calm green areas and offers a nicely presented collection of mostly modern and contemporary art.