Freezing-Rain Tower

Freezing-Rain Tower, or , is the Tower of Frosted Glacier in New Super Mario Bros. U. It is unlocked via completion of Cooligan Fields, its own completion opens the path to Prickly Goombas! and a cutscene of Peach's Castle being completing shrouded in Kamek's tornado. However, the cutscene will not play if Giant Skewer Tower is completed beforehand.

Layout
Similarly to Icicle Caverns and World 3-3, the main obstacles are large, falling icicles. Additionally, long tilting platforms are present in this tower.

A fourth Boom Boom is the boss of the tower. Kamek will fly in and give the Boom Boom the ability to jump. Unlike in the second round, however, this Boom Boom keeps his spin attack, even after getting stomped on.

Star Coins

 * Star Coin 1: At the top of a long tilting platform.
 * Star Coin 2: After the Midway Point, at the end of the right side of the tower.
 * Star Coin 3: After the second Star Coin, in a hidden wall to the left.

Enemies

 * Dry Bones
 * Boss: Boom Boom