Treasure Chest can be found on any one of the Islands, which are in the Ocean Biome. They are not buried or hidden. To open it, players have to repeatedly hit it until it is destroyed, after which you get a random item inside it. It has health like a mob, not a structure, so weapons are the most effective for opening it.

A treasure chest does not spawn on a island that already has a treasure chest, and there can only be a maximum of 2 treasure chests on a server. When a treasure chest is destroyed, another one spawns on a random island after a short delay. There is only one spawn location for each island.

Treasure chests don't drop quest items. However, they can drop maxed-tier items, such as the super hammer.

The Treasure Chest chrono quest requires you to open 5 Treasure Chests in 2 Days.

More Information

There is a way to rapidly acquire items from treasure chests, by going to the other islands and blocking the spawn points with walls. Return to the unblocked island and watch a treasure chests spawn every 5 seconds (only if you have destroyed the previous one).

See also:

Category World ore gold World
Biomes Tree3 Forest · Bear Winter · GMO Piranha Ocean
Features Newdrags Cave · Inv bottle full Lake · Inv sand Island · Treasure chest Treasure Chest