At 1:47 a.m. on September 21, 1999, Taiwan experienced one of its worst natural disasters of the past century-- a 7.3-magnitude earthquake that devastated the central part of the island. The 921 earthquake museum of Taiwan located in Wufeng County conserved the damage caused by Chi-Chi earthquake such as collapsed school buildings, fault rupture and elevation of riverbank. And thus the museum is a precious teaching material for natural science. All the construction of the museum was done by September 2007, and it included Chelungpu Fault Gallery, Earthquake Engineering Hall, Image Gallery, Disaster Prevention Hall, and Reconstruction Records Hall.