Terezín is a small fortress town located in the district of Litoměřice, in the Ústí Region, only 2 km southeast of Litoměřice, by the Ohře River near its confluence with the Elbe. The city lies on both sides of the river, which divides them into the Small and Main Fortress Terezin.
The Terezin concentration camp is a collective designation of Nazi repressive facilities established during World War II behind the Terezín fortress walls and mounds. Formally, it was not a concentration camp, but a Gestapo prison (in the Small Fortress, since June 1940) and a Jewish ghetto (in the Main Fortress, since November 1941).
During World War II, the Main Fort on the left bank of the river served Nazi Germany as a Jewish ghetto. The small fortress on the right bank of the Ohře River, located by the road to Prague, became famous for the Prague Gestapo Prison (it is often incorrect to state that a concentration camp was set up here). For this purpose, the Nazis established a special railway siding that led from the nearby Bohušovice nad Ohří station from the south to beyond the southern walls of the Main Fortress. During the Second World War, the Nazis transported the Jews concentrated there directly to the extermination camps of Auschwitz, Majdanek, Treblinka, Sobibor, Chelmno and others located in Poland and other occupied territories of Eastern Europe. The Terezín Memorial has now been set up in the Small Fortress and is now a national cultural monument.
Resources
https://cs.wikipedia.org/wiki/Koncentra%C4%8Dn%C3%AD_t%C3%A1bor_Terez%C3%ADn
