Ershawan
Battery, also known as Haimen Tianxian, is a sprawling ridgetop defense post established by the Qing
authorities during the First Opium War (1839–42). Little remains of
the original encampment but the views over Keelung harbor are good and
bilingual information boards provide some details for history enthusiasts.
The area around the fishing port at Badouzi is being transformed into a major tourist destination. The almost-completed building above will be an exhibition hall.