Keelung is a coastal city located in northern Taiwan, just northeast of Taipei. As a major port city, Keelung serves as a gateway to Taiwan for international cruise ships and is known for its maritime history, vibrant night markets, and scenic beauty.

The Baimiweng Fort (Holland Castle) is located on the upland at the west bank of Keelung Port. It was probably installed more than 300 years ago during the Spanish and Dutch colonial periods and is thus also known as the "Gun Emplacement of Fort Holland." It was once occupied by French troops during the Sino-French War. The Japanese colonial government remodeled the place to become the way it looks today.