Introduction to Hongmao City: Hongmao City on the banks of the Tamsui River was built by the "Dutch United East India Company" in Tamsui in the 17th century. It has been more than 370 years ago and has experienced Spain, the Netherlands, Britain, Australia, the United States, and Under the rule of Japan and other countries, it was not officially returned to Taiwan until 1980. It can be said that it is the most well-known ancient Tamsui building in northern Taiwan.