Penghu has a wonderful coastline full of rock formations and basalt columns. The most accessible colomns are at Daguoye, but you can find some at Xiaomenyu aswell. These are on the west side of Magong island. You need your own wheels to get there.
Taiwan is an island nation located off the coast of southwest of Okinawa, Japan and north of the Philippines that is governed by the Republic of China since 1945. Shaped roughly like a sweet 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.