Mauthausen Memorial Center Published June 21, 2012 at 300 × 215 in On the Danube Bike Trail, Day 3: Au/Donau-Mauthausen-Enns-Persenbeug Visitors arrive at Mauthausen Concentration Center, many who have come by bike from the Danube Bike Trail © 2012 Karen Rubin/news-photos-features.com Mauthausen Concentration Camp, Austria, has been turned into Mauthausen Memorial Center.