Spinwheel Library is the 7th course of Episode 1 in Captain Toad: Treasure Tracker and its Nintendo Switch and Nintendo 3DS ports of the same name. This level takes place in a Ghost House. The player starts next to a Spinwheel, which is used to rotate the center part of the course. The player simply needs to rotate the Spinwheel twice (180 degrees) to reach the course's Power Star.
Three Super Gems can be found throughout the level.
Super Gem 1: In an alcove that can only be accessed by rotating the Spinwheel 90 degrees to the right (from its starting position).
Super Gem 2: Accessed via a staircase that appears by rotating the Spinwheel 90 degrees to the left (from its starting position).
Super Gem 3: From the Spinwheel's default position, the player can access a purple Warp Pipe that goes to the underside of the course. Here, the player can find Blue Toad, who gives the player the Super Gem.
A hidden 8-bit Rosalina image can be found on one of the books near the purple Warp Pipe. This was removed in the Nintendo 3DS / Nintendo Switch version of the game.