Feed your inner culture vulture at Museo Histórico General San Martín. See if there are any guided tours or ask a museum employee for tips on some highlights.
This Mendoza City Center museum is a good spot to start your day of sightseeing. There's plenty to explore in the vicinity, like Independence Square, General San Martin Park, and Malvinas Argentinas Stadium. Wander around at your leisure at Museo Histórico General San Martín before heading to these other fine sights.