Much of the city's original splendor was destroyed on 31 March 1983, when an earthquake toppled many buildings. Though many were rebuilt and repaired, the heart of the city still has ruins and empty lots. In 2005, Popayán was declared by the UNESCO as the first city of gastronomy because of its variety and meaning to the intangible patrimony of Colombian culture. The culinary history of the Cauca Department was chosen because it maintains traditional food preparation methods that have been passed down orally for generations. In 2009, UNESCO also declared the Semana Santa processions during Easter Week a Masterpiece of the Oral and Intangible Patrimony of Humanity.