The Río Uruguay divides Argentina and Uruguay.  We followed it from Buenos Aires to visit Argentina´s north east.  Fist stop Colon.  From Mercedes we caught a local bus to Colonia Carlos Pellegrini to visit the wetlands of the Reserva Provincial del Esteros Iberá.

.

Further north in the province of Missiones are the Jesuit ruins of San Ignacio Miní, Loreto and Santa Ana.  Between 1603 and 1767, the Jesuits founded 30 missions in this part of South America (15 in Argentina, 7 in Brazil and 8 in Paraguay – 7 of them are World Heritage sites).  The missions were laid out around a huge central plaza, the church on one side and rows of long houses for the indigenous on the other sides.

.