1) The Mona Lisa, painted by Leonardo da Vinci, is one of the most famous and valuable artworks in the world.

2) The fingerprints of koalas are so similar to humans that they have been mistaken at crime scenes.

3) In Egyptian mythology, the Book of the Dead is a collection of spells, prayers, and rituals intended to guide the deceased through the afterlife. It contains instructions on navigating the perilous journey, avoiding obstacles, and ultimately achieving eternal life in the presence of the gods.

4) The book series "The Chronicles of Narnia" by C.S. Lewis has sold over 100 million copies worldwide.