It is especially noted for having one of the three Matsu Temples in Taiwan. Matsu is the goddess of the sea and patron saint of fishermen, and therefore one of the most popular deities in Taiwan.
他的船隊由海上駛入乾豆門時，他們看到的景象是：「前望兩山夾峙處，曰甘答門，水道甚隘，入門，水忽廣，漶為大湖，渺無涯涘……」二山指的是觀音山和大屯山，過了山口，他看見一片浩渺無際的水，被群山環抱。