Podgorje is the site of two known mass graves associated with the Second World War. The Vrženca Mass Grave is located 1.2 kmsouthwest of Podgorje and 1.2 km northwest of the summit of Kojnik Hill, on the east edge of a meadow next to the woods. Spelunkers found human remains at the site; the remains were collected in 1992 and were reburied in the Koper cemetery in 2004. The Podgorje 6 Cave Mass Grave is located on the steep slope of a small valley in the Jančarija area in the foothills of Mount Slavnik. It contains the remains of undetermined victims. The remains of two people were collected from the grave in July 1992 and were reburied in the Koper cemetery in 2004.