From 21st April 2021 in Berggericht-Mineralogical exhibition, 9 AM-5 PM, Wednesday - Sunday.
viac 19.04.2021
viac 29.03.2021
World Water Day, held on 22 March every year since 1993, celebrates water and raises awareness of the 2.2 billion people living without access to safe water.
viac 22.03.2021
