The Gold Storage allows players to save hard earned Gold so that it can be used for future upgrades. The highest level can store up to 2 million Gold per storage.
The Gold Storage building takes up a 3×3 space.
Gold Storage are still fully functional while being upgraded.
It is one of the most protected buildings in-game, due to its capability to store large quantities of Gold.
There is a relatively common glitch in the attack screen with regard to Gold Storage; in some cases a village may have a Gold Storage that is in fact nearly or completely full, but for some reason it appears completely empty to the enemy player viewing it. However, once it takes damage, the Gold in the storage suddenly pops up and it looks like it is overflowing. This also applies to Elixir Storage, Elixir Collectors, and Gold Mines.
Upgrading your Gold Storage to a higher level than you require for storage purposes can potentially save Gold in a raid. As an attacker receives an amount of Gold proportional to the percentage of damage each hit causes, the higher health of the upgraded building results in less Gold per hit. It also takes longer to destroy, giving you more time for your defenses to destroy the attacker before they can steal all the available Gold.
The Gold Storage is the counterpart of the Elixir Storage, and vice versa.
Although it stores Gold, it is upgraded with Elixir.
As of the July 2015 Update, all kinds of Storage are now immune against Lightning Spells and Earthquake Spells.