Willemstad is the capital of the country of Curaçao, an Island in the south Caribbean Sea. The island is one of the countries of the Kingdom of the Netherlands. The historic town centre consists of the quarters Punda and Otrobanda, which are separated by the Sint Anna Bay, an inlet that leads into the large natural harbour. Punda and Otrobanda are connected by the Queen Emma Bridge, a long pontoon bridge, built in 1888. The bridge is hinged and opens regularly to enable vessels to enter or exit the harbour. Willemstad has an array of colonial architecture that is influenced by Dutch styles.