Guides by Lonely Planet
Museo Argentino de Ciencias Naturales
In the geographical center of the city at circular Parque Centenario is this excellent natural-science museum. On display are large collections of meteorites, rocks and minerals, Argentine seashells, insects and dinosaur-skeleton replicas. The taxidermy and skeleton rooms are especially good. Bring the kids; they can mingle with the hundreds of children who visit on school excursions.