Up: Buenos Aires, from the ferry boat. The navigation Buenos Aires/Colonia is 50 minutes long at 80 km/h, fast boats!! Middle: Arriving to Colonia, a small and very old city. It used to be the ilegal commerce center of the Rio de La Plata, in the 1600 and 1700. Down: A view of Colonia, the pink building is the hotel were we stayed for the first night. At the end of the street, a pear and the Cost Guard building.