This is the top tourist attraction on the island. Also known as Jiugong Tunnel (九宮坑道), the 790m underground Siwei Tunnel, which was blasted through a granite reef, is twice as large as the Jhaishan Tunnels on Kinmen…
Liehyu's most famous lake is the pretty, reed-fringed artificial Lingshui Lake from which you can see Fujian. It's home to a number of species of waterbirds native to Fujian province.
The two intact forts in Huangtso were built in the 1970s and each has a web of underground tunnels, including a 200m-long one that connect the two structures.
The Huchingtou War Museum contains war memorabilia and an observation room with binoculars from which you can see Xiamen on a clear day.