Alvin Lucier''s "brain" is still composing music 3 years after his death. – Photo credit: Guy Ben-Ary/YouTube & By Non Event – Alvin Lucier, CC BY-SA 2.0
The "Mona Lisa" and thousands of other art pieces were hidden around France during WWII. – Photo credit: Mariordo (Mario Roberto Durán Ortiz) (left), public domain (right)