Largest cities
Buenos Aires 3,122,000 pop., 15,748,000 urban aggl.
Cordoba 1,505,000 pop., 1,597,000 urban aggl.
Rosario 1,072,000 pop., 1,399,000 urban aggl.
Mar del Plata 639,000 pop.
Salta 628,000 pop., 664,000 urban aggl.
San Miguel de Tucumán 590,000 pop., 1,069,000 urban aggl.
Mendoza 127,000 pop., 1,181,000 urban aggl.
Highest mountains
Aconcagua 6,961 m (22,838 ft)
Nevado Ojos del Salado 6,893 m (22,615 ft)
Monte Pissis 6,793 m (22,287 ft)
Cerro Bonete 6,759 m (22,175 ft)
Nevado Tres Cruces 6,753 m (22,156 ft)
Llullaillaco 6,739 m (22,110 ft)
Longest rivers
Paraná 4,880 km (3,032 mi) total, 1,800 km (1,118 mi) in Argentina
Paraguay 2,620 km (1,628 mi) total, only final section is in Argentina, marking the border with Paraguay
Uruguay 1,840 km (1,143 mi) total, 1,200 km (746 mi) in Argentina
Pilcomayo 1,800 km (1,118 mi) total, including Bolivian and Paraguayan parts, marks a long stretch of border with Paraguay
Bermejo 1,200 km (746 mi)
Desaguadero 1,200 km (746 mi)
Salado del Norte 1,200 km (746 mi)
Largest lakes
Mar Chiquita 4,000 km² (1,544 sq mi), medium surface area
Lago Buenos Aires 1,850 km² (714 sq mi) total, 880 km² (340 sq mi) in Argentina
Lago Argentino 1,466 km² (566 sq mi)
Viedma 1,088 km² (420 sq mi)
San Martín 1,013 km² (391 sq mi) total, 521 km² (201 sq mi) in Argentina
Colhué Huapi 810 km² (313 sq mi)
Largest islands
Isla Grande de Tierra del Fuego 47,992 km² (18,530 sq mi) total, 18,507 km² (7,146 sq mi) in Argentina
Isla de los Estados 520 km² (201 sq mi)