South of the center the Museo Antropológico Eduardo López Rivas is an anthropological and archaeological museum well worth the hike. The fascinating hodgepodge of exhibits includes mastodons, Carnaval costumes, stone-carved llama heads, mummies from the chullpares (funerary towers) and skulls exhibiting the horrific cranial deformations once practiced on children.
Take any micro (small bus) marked ‘Sud’ from the northwest corner of Plaza 10 de Febrero or opposite the train station, and get off by the zoo.