What is the best way to protect stored money at home from environment hazards?

What is the best way to protect stored money at home from environment hazards?
The best way to protect the money would be by storing it in a safe. There are fire proof safes that can be built into a wall, so that it will be out of the way. Persons may also store the money in a plastic bag before putting it in the safe, so as to protect it from water damage