@McTag,
Thanks to Contrex above.
For the pagoda, the problem lies in the word PART, which doesn't sound right with ON/AT, but usually used with IN.
A pagoda has something like eaves curling up pointing to the sky; so can we use all three?:
-A body was hung on/at/in the front part.
Without PART, the location is inaccurately definite regarding the situation.