Cambodia has had a dark history in the 1970s-1980s, with the Khmer Rouge running amok in the country. 

The Killing well, Wat Thmey

One of the sites of their outrages is near Siem Reap , now an active Pagoda site, called Wat Thmey. This is a small museum just on the outskirts of Siem Reap, which one may visit for an understanding of this dark era. 

This place is also sometimes referred to as " the killing fields" in literature. The skulls and bones of the people who died here are displayed. Its a somber site, and we hope such atrocities never happen again anywhere. 

The larger Cambodia Landmine museum with the war materials and all is a bit further away and we didn't visit that.