Ciudad Vieja is the name of the oldest part of the city of Montevideo, capital city of Uruguay. Nowadays, Ciudad Vieja is a barrio (neighbourhood or district) of this city. In the last couple of years it has gone through a major transformation that has made it the main nightlife centre in town. It is in this area where most of the nightclubs are, and also it hosts the 'Mercado del Puerto' a traditional venue for Uruguayan food and beverages. The main port of Uruguay (being the main Big Draft port in southern South America) is located in Ciudad Vieja.
Part of this transformation is due to the campaign made by the mayor since this part of the city had been in a state of abandonment for decades.