There are 17 aboriginal ethnic groups inhabiting the province, including the Miao, Bouyei, Dong, Sui, Gelao, Yi and Tujia. Their colorful cultural relics and customs make Guizhou a popular destination for heritage-based tourism. Francesco Frangialli, former secretary-general of the World Tourism Organization, said "Guizhou is a province of culture, eco-environment, folk songs and dances, and wine."