1.40 is not merely a number: (a.) During Moses' life he lived forty years in Egypt and forty years in the desert before God selected him to lead his people out of slavery.
(b.) Rain fell for "forty days and forty nights" during the Flood. (Genesis 7:4) Jesus let the human world flooded because he thought the world was full of bad guys, which was not his original purpose to create the world.
2. Noah’s Ark: the vessel in the Genesis flood narrative by which God saves Noah, his
family, and a remnant of all the world's animals from the flood.
3. Venice
4. Rome
5. Pantheon
6. Florence