The Cihu Triangle Fort is located within the Cihu Coastal Area. The fort is surrounded by trenches for protection, and barbed wire is used along the beach to create a minefield, which could prevent the enemy from advancing further during wartime. The Triangle Fort has a solid structure and a camouflage appearance, with the interior serving as a living area for troops and a place for performing duties. Observation posts and shooting ports are set up at each of the three corners, and a guard post is also located on the fort, making it a strong fortress. As the military conflicts between the two sides gradually subsided, the Triangle Fort was transformed into a cultural landscape for tourism and natural ecological conservation. In late spring and early summer, the abundant night-blooming cereus flowers around the Triangle Fort attract many bees, butterflies, and the summer migrant bird - the chestnut-headed kingfisher, coming to feed, creating a vibrant display of colors in spring and summer.