"from the Rio de la Plata to the Havana"
Map of the Rio de la Plata
Creative Commons Attribution Share AlikeMap of the Rio de la Plata - Credit: Roke

The Rio de la Plata is a river and estuary that forms part of the border between Argentina and Uruguay.  Both the capitals of Buenos Aires and Montevideo lie on the Plata.

Havana is the capital city of Cuba, in the Caribbean.

 

Castillo del Morro, Cuba
Creative Commons AttributionCastillo del Morro, Cuba - Credit: Krasivaja at en.wikipedia