For example, Penghu has some 574 stone fish traps, built over the space of over 200 years out of blocks of basalt and coral. From the air they look like a "great wall" in the sea. An especially striking one on Chimei Island's northeast coast is built in the form of a double heart, lending Penghu an even more romantic air.
以二百多年前澎湖老祖宗的捕魚設施──石滬──為例，澎湖約有 574 座石滬，從空中鳥瞰，一座座利用玄武岩與珊瑚礁堆砌而成的石滬宛如海上長城，特別是七美島東北海岸「心心相印」造型的雙心石滬，更為澎湖增添不少浪漫色彩，是個值得發展生態旅遊的觀光資源。