By law, in Singapore, graves must be exhumed after 15 years to make room for new graves in the densely populated microstate. The bones are cremated and then deposited in a columbarium, which is a sort of apartment complex for funeral urns. Other Asian countries like Japan take similar actions with their funerary practices. This article from The New York Times provides an interesting look at one aspect of the cultural geography of death.

Comments
That is nice to know! NOT!!!
The way we treat our departed and their graves is a strong indication of our culture. And is indeed influenced by several geographical features like climate, population density and others. Death culture is often considered as morbide and not wanted, but should be considered with more interest and respect. Thank you, Matt, for this article!