There are 609 stone fish weirs in Penghu County alone, their dikes extending over 133 kilometers. In particular, Jibei Island has 101 existing fish weirs, giving it the highest concentration of such structures in the world.
Groups of fish weirs that date back over 300 years in places like Penghu and the Xinwu District of Taoyuan are also remarkable for their wide variety of shapes and the integrity of historical documentation.