Mauthausen Concentration Camp Memorial
Mauthausen was declared a national memorial site in 1949. Bruno Kreisky, the Chancellor of Austria, officially opened the Mauthausen Museum on 3 May 1975, 30 years after the camp's liberation. A visitor centre was inaugurated in 2003, designed by the architects Herwig Mayer, Christoph Schwarz, and Karl Peyrer-Heimstätt, covering an area of 2,845 square metres (30,620 sq ft).