Zhonggan Temple, a Level-3 Historic Monument, is dedicated to Ni Sheng Gong (Chief Ni), the protector deity of naval vessels and one of the four major generals under Kaizhang Shengwang. This temple is unique in Taiwan as the only one enshrining Chief Ni. Originally named Shenggong Temple or Shenggong Palace, it was renamed Zhongguan Temple during the Qianlong period and later became known as Zhonggan Temple during the Daoguang period, a name that has persisted to this day. The temple was jointly constructed by the naval forces during the reign of Zheng Jing, and they held Mid-Autumn Festival activities here.
Zhonggan Temple comprises the Sanchuan Hall and the Main Hall. The renowned artist Chen Shou-yi painted the murals and door gods on the Main Hall's walls. At the center of the Main Hall is the statue of Chief Ni, flanked by the Earth God and Zhusheng Niangniang. The roof ridge features two dragons guarding the central deities of Fu, Lu, and Shou, creating a captivating scene adorned with dragon heads and waves. The entrance is guarded by the deities of Black and White Impermanence, adding to the solemn atmosphere. On the left wall of the Sanchuan Hall, there's a stele from the Daoguang period titled "Reconstruction of Zhonggan Temple," marking its historical significance.