A small, traditional village in the mountains behind PNU. Famous for their locally brewed Makgeolli (rice wine) and BBQ'd black goat. Geumjeong Mountain fortress is nearby if you want to check out Busan's line of defense against invading armies of Japanese and the Machus.
You can read an extensive review of the area here.
To get there take subway line 1 to Oncheongjeong then take bus #203 to Sanseong Village.
You can also check out locally made pottery: