I used to work at a carpentry, i mostly helped producing fancy furniture and interior design elements, but sometimes they asked me to do simple chores like folding plans or organizing boxes. One day they asked me to come to a nearby building to help move a "picture". When we arrived i was shocked and amazed, standing in front of one of Eschers "Metamorphosis" paintings. They're like 4 meters in length. The other guy I was with couldnt care less but i was holding the thing like it was a newborn baby when we carried it to the car :D