Exhibition Tickets Lost and Found: The Secrets of Archimedes Path to this page: Home » Exhibitions » Archimedes Palimpsest LOST for centuries. FOUND by the Walters Art Museum. Discover how an international team of experts resurrected the hidden manuscript of the ancient world's greatest thinker, Archimedes of Syracuse. This exhibition ended on Jan. 1, 2012. Browse a list of our current and upcoming exhibitions.