Priceless Artwork
In 1502, Leonardo da Vinci was commissioned by an Italian statesman to depict the Battle of Anghiari. Around fifty years later, Giorgio Vasari was asked to paint over the original work. It did not feel right to do such a thing. This was the reason a theory claims that they made a false wall for him to paint on.

Priceless Artwork
Bats
Calvin Oshowy only found out that his new house was full of bats two months after buying it. The animals holed up in the attic, in the walls, and in the ceiling. He sealed off the entry points in the house to stop them from coming in. Not only that, but he also made them a bat sanctuary to keep them out.

Bats