The Sugar Rush castle towers over most of the kingdom. To access its gates, one must travel across an extremely long, cookie wafer bridge, which leads to the hillside on which the castle resides. Its exterior has a primarily white color palette; its theming being based on sugar coating. The entrance is a large, stain-glassed door with spherical designs based on different candies such as peppermint. The entrance is heavily guarded by Oreo guardsmen, who also operate within the castle's walls. The "welcome mat" of the castle's main entrance also acts as a trap door into the Fungeon.
The castle's interior is mostly colored in pink (salmon, according to King Candy) walls, furniture, and draperies—matching Vanellope's princess gown. A long, velvet carpet stretches to the throne, which doubles as a parking space for the Royal Racer kart.
Places of interest
- Throne Room: King Candy's base of operation. It is here that the king would normally carry out the governing of the kingdom, with Sour Bill always by his side. The throne room has a secret elevator beneath its curtains that leads to the lowest level of the game: the Code Room.
- Code Room: A forbidden chamber hidden beneath the castle, the Code Room is the source of everything within the game. Those who have access to it, have the power to manipulate and control the world of Sugar Rush and its inhabitants however they please.
- Fungeon: The kingdom's prison. Vanellope and Felix were briefly held in the Fungeon, until Ralph rescued them. The windows of the Fungeon are made of Pocky sticks that reinforce themselves whenever Felix tries to break them apart ("Why do I fix everything I touch?!") Vanellope's fungeon cell appears to be decorated with a circus-themed mural, with smiling clowns on the walls saying quotes like "Someone's been naughty!" and "You are a bad girl!"