Medellín is the second-largest
city in Colombia. It is in the Aburrá Valley, one of the most northerly of the Andes
in South America. To 2012, it has a population of 2.7 million. With its surrounding area, the metropolitan
area of Medellín (área metropolitana
de Medellín), composed by another nine cities, it is the second largest
urban agglomeration in Colombia in terms of population and economy, with more
than 3.5 million people.