Cienfuegos, the capital of Cienfuegos Province, can be found along the southern coast of Cuba. It is located around 250 km from Havana and has an estimated population of 150,000 people. Since the late 1960s, Cienfuegos has become an important industrial hub in Cuba, mainly in the sugar and energy industries. It has earned the nickname of La Perla del Sur (Pearl of the South). The city's name is derived from the surname of José Cienfuegos, Captain General of Cuba during 1816–19. In 2005, UNESCO added the Urban Historic Centre of Cienfuegos to the World Heritage List. The downtown area has a collection of neoclassical buildings, with six from 1819–50, 327 from 1851–1900 and 1188 from the 20th century, making it one of the most remarkable clusters of its kind in the Caribbean.