Trinidad (pop 73,466) is located in the province of Sancti Spiritus, on the southern coast of central Cuba. Originally a Spanish colonial settlement, Trinidad became a UNESCO World Heritage site in 1988. It is one of the best preserved cities in the Caribbean from the time the sugar trade was the main industry in the region. Today, tobacco processing is its primary industry. The Plaza Mayor has cobblestone streets, pastel colored houses with intricate wrought-iron grills and is populated with colonial architecture.