About two kilometers from the Croatian/Slovenian border, there is a small village called Lipa. On April 30, 1944, about 150 germans, italians, serbs soldiers and slovenian volunteers arrived in Lipa. They were part of a major anti-partisan action in the area with a mission to secure the area from partisans and those possibly suspected of helping partisans. For some unknown reason the village was destroyed and its inhabitants killed. In all, 269 people were killed, 121 of them were between seven months and fifteen years. Some were shot while others were burned to death after being locked in a house which the perpetrators then set on fire. Wether the village had something to do with partisans has not been established. 

Current status: Razed with museum (2022).

Location: 45°27'58.97" N 14°18'15.58" E

Get there: Car.

My comment:

The ruins of the houses that were destroyed have been preserved for posterity and the new village has been built next to it. Just as they have done in the more famous places Lidice in the Czech Republic and Oradour-sur-Glane in France. There is also a museum on site.

Follow up in books: Hamburg Institute for Social Research: The German Army and Genocide: Crimes Against War Prisoners, Jews, and Other Civilians in the East, 1939-1944 (1999).