This is an amazing area on the north coast only about 45 mins drive from Taipei. It is a place known to tourists primarily for the old mining towns of Jiufen and the geological features here. It also offers great hiking trails and amazing views of the nearby Teapot Mountain and Keelung Mountain.
I hope to hike up Teapot Mountain one day, heard it is quite a hike though.
This place is famous for its Golden Waterfalls due to the high mineral content of the rocks in this mining town.