Rivne is famous for being the city with tough and tragic fate, which haunted it over the whole history of its existence. However, the darkest pages in city’s history were entered by the 20th century: during the World War II, Rivne’s territory was occupied by the German-fascist invaders and concentration camps, where people were massively annihilated, were created there.
https://discover-ukraine.info/places/western-ukraine/rivne/1061