Ruined Kingdom

The Ruined Kingdom is a kingdom in Super Mario Odyssey. The greater location of Crumbleden, the Ruined Kingdom is a stormy and mysterious world filled with the ruins of a long-dead kingdom.

During the events of the game, Mario and Cappy crash land the Odyssey in this location after Bowser and the Ruined Dragon attack them. The crash leaves the Odyssey damaged, requiring three Power Moons to restore back to working condition. Mario fights and defeats the Ruined Dragon in this kingdom, enabling him to use the Odyssey again to leave and continue on in his journey to Bowser's Kingdom.

Power Moon locations
There are a total of 10 Power Moons in Crumbleden. Mario needs to collect 3 to repair the Odyssey, making it the second smallest location in the game, beaten by the Nimbus Arena.

(❸=Multi-Moon, ◲=Moon Rock)
 * 01: Battle with the Lord of Lightning!: ❸ After exiting the Odyssey, Mario should make his way up the stairs and pull the sword out of the ground using Cappy. A power terminal will appear that Mario can capture and ride up to the tall tower. A boss fight with the electric dragon will ensue and will reward Mario with a Multi Moon when defeated.
 * 02: In the Ancient Treasure Chest: To the left of the stairs that lead to the power terminal, there is a ledge that Mario can hold on to. At the end of the ledge is a treasure chest that contains a Power Moon.
 * 03: Roulette Tower: Climbed: After the dragon is defeated, a Mini Rocket will appear on the battlefield. The rocket will lead Mario to the roulette block challenge area showcased in the Nintendo World Championship. After climbing the tower, Mario is rewarded with a Power Moon.
 * 04: Roulette Tower: Stopped: Secret moon in the roulette tower challenge.
 * 05: Peach in the Ruined Kingdom: Only available after completing Moon Kingdom. Peach and Tiara are on the battlefield, to the right of the dragon.
 * 06: Caught on a Big Horn: ◲ On the battlefield, jump onto the dragon's head. Throw Cappy onto the dragon's left horn and hold him there to reveal a Power Moon.
 * 07: Upon the Broken Arch: ◲ On top of the broken arch on the right side of the staircase.
 * 08: Rolling Rock on the Battlefield: ◲ On the battlefield, there is a loose rock that can be hit for an abnormally long amount of time to reveal a Power Moon.
 * 09: Charging Through an Army: ◲ Inside a pipe that appears next to the Odyssey. The pipe leads to an area where Mario must bust open a cage by capturing a Chargin' Chuck.
 * 10: The Mummy Army's Curse: ◲ In the same area the above Power Moon; after the Chinchos start appearing, Mario must return to the beginning of the area, where a sparkling Chincho will spawn. Defeating it reveals the Power Moon.