Montevideo’s Ciudad Vieja, or Old Town, is located on a peninsula separating the Río de la Plata from the harbor. It has the orderly grid typical of many Spanish cities in the New World. Until 1829, the Ciudad Vieja was walled though today only one gate (the Puerta de la Ciudadela) remains of those defenses. This section of Montevideo is home to many of the city’s most famous historic buildings, including the cathedral and the Cabildo, which today houses the city’s archives.