There are about 26 Treasures throughout Pandaria waiting to be found. Some of them give you a lot of gold and count toward different achievements such as: Treasure of Pandaria, Fortune of Pandaria, Bounty of Pandaria and Riches of Pandaria.
Grabbing all of the items in this list gives players approximately 1792 Gold — not counting the value of the gems in the stash of gems, and other random factors. Worth the trip around the continent if you are bored.
Note: Some of these items do not count toward the achievements listed above, but give you gold. Added to benefit you. Some items can be found inside caves (added cave maps where applicable). Additionally, these are one-time lootable. They will be phased out permanently afterwards.
Warning: Make sure to empty your bags often. There is a known bug that when you click one of these chests when the bags are full, the chest despawns and item is lost. This causes you to lose the credit for the achievement, and the chest won’t spawn again for your character.