Mashan Observation Post

Located in Mashan, Jinsha Township, it is only 2,100 meters from Jiaoyu on the opposite shore, and just 1,800 meters at low tide, making it the closest point between Kinmen and Xiamen. In the past, it served as a military stronghold for observing maritime activities on the opposite shore and is known as the 'Foremost Outpost in the World'.