Taiwan is a country located off the coast of southwest of Okinawa, Japan and north of the Philippines and is known formally as the Republic of China (ROC) since 1945. Shaped roughly like a potato, the island nation has more than 23 million people and is one of the most densely populated places in the world. Besides its crowded cities, Taiwan is also known for steep mountains and lush forests. ROC also has de facto control over two provinces: Taiwan (consisting of the island itself and the tiny Pescadores (Penghu)), and Fujian (Quemoy (Kinmen/Jinmen), and Matsu islands), which are often referred to as outlying islands by the Taiwanese.