The most impressive works of art often took months or even years to complete.

Artists pour their knowledge, creativity and emotions into their projects.

Their finished products are filled with meaning and thus personal importance, the value of which cannot be appropriately measured, at least until they sell to the highest bidder.

The following famous works of art cost a lot of money, held a lot of significance to the art community, and were unfortunately damaged due to carelessness, negligence, anger or pure insanity, likely causing the creators great despair — or to roll over in their graves.