玉山國家公園
Taiwan Provincial Highway No. 18 is a highway between Taibao in Chiayi County to Provincial Highway No. 21 at Tatajia (Tataka) in Yushan National Park. It is also called the New Central Cross-Island Highway(新中橫公路) and Alishan Highway(阿里山公路). The highway connects Chiayi City and the rest of Western Taiwan to Alishan National Scenic Area and Yushan National Park. The overall length of the highway is 108.559 km.