Cross the legendary Rio de la Plata and spend a day exploring the UNESCO-listed town of Colonia del Sacramento on this full-day tour from Buenos Aires to Uruguay, including round-trip transportation by express ferry. Located just a one-hour ferry ride from Buenos Aires across the “de la Plata” River, it is really easy to squeeze in a one day visit from neighbouring Argentina. Originally founded by the Portuguese in the 1600s and named a UNESCO World Heritage site in 1995, Colonia has become a must-visit destination for all travelers who fancy old historical towns with charming centers.