Taipei Basin is a geographic region in northern Taiwan. It is the second largest basin in Taiwan. The basin is bounded by Yangmingshan to the north, Linkou mesa to the west, and the Ridge of Xueshan Range (Traditional Chinese: 雪山山脈) to the southeast. The shape of the basin is close to a triangle. The three vertices are Nangang, Huilong of Xinzhuang, and Guandu of Beitou.