Dapu Arch Bridge is a first tourist attraction from Chiayi after the No. 3 Provincial Road to the Dapu Township Scenic Area, located in sets of three lines 334 km .Dapu Arch Bridge about 130 meters, away the valley about 70 meters. Dapu Arch Bridge traverses the CengWen Rivers upstream ,you can overlooking the CengWen River Valley from the bridge. Here is also a echo valley, you can hear your own echo. Overlooking down from the Dapu Arch Bridge, you can see the spectacular canyon terrain ,it is the spectacular wonders of the rare in Taiwan, while the other side is calm and broad Zengwen Reservoir.