Huayu, located to the northwest of Wang'an Island, is the westernmost island of Penghu County and of Taiwan. Its highest point is about 53 meters above sea level. While Huayu shares a similar landscape with other islands in Penghu, its geological composition differs. Other islands are primarily made of basalt, while Huayu is composed mainly of andesite, formed between 90 to 50 million years ago, making it the oldest island in the Penghu archipelago. The long-term weathering of the island has created unique rock formations. During low tide, visitors can see the "Immortal's Left Footprint (Xianjiaoshiyin)" on the southeastern side of the island, which is said to match the "Right Footprint (Xianjiaoshiyin)" found on Tiantai Hill on Wang'an Islet. The island also features rock formations such as the Couple Stones(夫妻石) (Lover's Stones(情人石)), Stone Guanyin(石觀音), Stone Monkey(石猴) and Old Man Rock(老翁石). At the summit of Huayu stands the Huayu Lighthouse, the island's most prominent landmark. Constructed during the Japanese colonial period for its strategic military significance, the lighthouse was completed in the 14th year of the Showa era (1939). The structure features a white, circular tower made of reinforced concrete, standing 12.5 meters tall, making it the westernmost lighthouse in Taiwan. Currently, the lighthouse is equipped with a fourth-order flashing light, emitting a white flash every five seconds with an intensity of 1,600 candlepower. It is now remotely operated and unmanned.
Recommended Duration of Visit: 7 hours or overnight

Source: Penghu Travel, Maritime and Port Bureau, Ministry of Transportation and Communications