Somewhat related, many of the world's art treasures are mothballed in duty-free warehouses where they change hands without ever seeing the light of day. There w

Somewhat related, many of the world's art treasures are mothballed in duty-free warehouses where they change hands without ever seeing the light of day. There was a great Planet Money episode on this a while back: https://www.npr.org/sections/money/2018/02/09/584555705/episode-823-planet-monet https://www.npr.org/sections/money/2018/02/09/584555705/epis...