People can quickly become complacent to think that their single location storage of their Bitcoin hoard would be enough. We all saw how 300 000 people have lost their houses in as little as a few seconds.
The Beirut explosion should be a wake-up call to all of us, to store your Paper wallets and cold wallets in more than one geographical location. A national disaster or a accident like this might wipe out your house and if you used that as your primary hiding place, you would lose more than your house.
After a disaster like this, bulldozers are brought in and only the foundations might be left after they are done. (So hiding it in a safe or a wall or the roof is a bad idea.)
Make sure you have several copies of your Paper wallets/Private keys and store them in separate locations. You might not even be at home when a disaster like this happens and when you return, the authorities might stop you from entering the devastated area. (due to instability of structures or chemical/gas leaks.) So you will not have a opportunity to retrieve your stash.
Wake up and act now... before it is too late.