1 of the 12 cars destroyed in the 2003 Daegu Subway disaster is kept at the "Daegu Safety Theme Park" at this location: https://www.google.com/maps/place/Daegu+Safety+Theme+Park/@35.9889537,128.6924353,340m/data=!3m1!1e3!4m5!3m4!1s0x0:0x1f7ba46ac789be02!8m2!3d35.9890199!4d128.6920042
The rest of the cars were sold for scrap metal.