Montevideo is the capital of Uruguay, situated on the north shore of Río de la Plata, the arm of the Atlantic Ocean that separates Uruguay from Argentina; with Buenos Aires on the other side. Visit the Ciudad Vieja with the city’s oldest buildings, several museums, art galleries and the Mercado del Puerto. Walk over the Rambla, a coastal avenue. Go to Fortaleza del Cerro for a view over the bay. Walk through the botanical gardens of parque Prado. Enjoy the beach (13 km) or Uruguayan tango.