New Super Mario Bros. U: Frosted Glacier- Castle -- Wendy's Shifting Castle

This castle is filled with platforms that are connected at 90 degree angles, that rotate from a post. This makes jumping to other posts easier or harder, depending on what part of the platform is level with the floor. Get an Ice Flower and prepare to dodge the Thwomps. Making a comeback in this game are the Thwimps, smaller versions of Thwomps. You'll come across a long line of Thwomps you'll have to quickly run under. Behind the last Thwomp is the first Star Coin. After that is the midpoint. Next are more Thwimps and 90 degree platforms. You'll drop down under the second set of brick blocks to a hidden area with coins. Over that same set of brick blocks is an invisible block and a pipe. Carefully climb up to the pipe. It will take you to a room with Thwimps and the second Star Coin. Time the Thwimps' movements and carefully get the Star Coin. When you return to the main level, on the right side of one of the pillars with the 90 degree platforms is a green pipe. You'll find a set of infinite platforms moving up or down. You'll find the third Star Coin behind the giant Thwomp. Return to the main level and you'll find another set of Thwomps. There are coins to guide your jumping. This will lead you to the boss door. There's a Fire Flower in an invisible block on the right wall. Once through the door, use the cannon to blast to the Airship. Inside, the floor is filled with ice and Wendy O. Koopa is on ice skates. She skates around and makes rings appear. Stomp her and she spins around in her shell. Stomp her three times to defeat her. The path to the Soda Jungle opens up. We have all the Star Coins in Frosted Glacier.