One of the top destinations or things to do in Kampot is to visit Bokor Mountain.   It’s most famous as being a bit of a ghost town with a huge abandoned casino.  Probably more fun than the actual destination is riding up.  It took about an hour and while it was hot and sunny at the base, there was a pretty drastic change toward the top.  I think we went through 2.5 seasons on our way up.  Depending on what weather decides to greet you at the top, you can see Phu Quoc Island in Vietnam.  Pretty cool.