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The Ruins is the third world from Donkey Kong Country Returns and Donkey Kong Country Returns 3D. It is infested by the Tiki Tak Tribe and located on Donkey Kong Island. The theme of this level, as the name says, is ancient ruins. This world includes dungeons, abandoned waterways, and ancient temples. Some new elements introduced here are collapsing platforms, buttons and switches. New enemies such as Tiki Tanks, Tiki Bombers, Stilts, and Toothberries make their appearance here.
Stu is the boss of this world.
The following is extra content that can be unlocked in the Ruins. The unlockables can be seen in their respective galleries after selecting the "EXTRAS" option in a file's menu. For a full list of extras in the game, see here.
Images are unlocked by collecting all Puzzle Pieces in certain levels. All images that can be unlocked in the Ruins are listed below, along with their titles and the levels wherein they can be unlocked (mentioned in parentheses).
A soundtrack selection for this world can be unlocked after beating Stu.