The Soledar Salt Mines
Some 250 million years ago, a part of Ukraine was under a shallow ocean. When the ocean dried up, it left behind a huge deposit of salt.
Dachau Concentration Camp
Dachau concentration camp was the first of the Nazi concentration camps opened in Germany, intended to hold political prisoners.
Mauthausen Concentration Camp
Mauthausen-Gusen concentration camp grew to become a large group of Nazi concentration camps that was built around the villages of Mauthausen and Gusen in Upper Austria.