Private Coastal Train, $16 USD by return/Regular Train, 2.2 Pesos

WIKI: Tren de la Costa (Train of the Coast) is a suburban 15.5 km (9.6 mi), 11-station light rail line in Greater Buenos Aires, between Maipú Avenue station in the northern suburb of Olivos and Delta station in Tigre, on the Río de la Plata. The line connects directly to the Mitre line at Maipú–Bartolomé Mitre station for direct access to Retiro terminus in the centre of the city.Tren de la Costa it is primarily a tourist service and is served by nine two-car trains sets. Each train has a capacity of 200 passengers and travels at an average speed of 35 km/h. The journey time is 30 minutes, with a frequency of about 20 minutes.