World 6-Fortress 1
From the Super Mario Wiki, the Mario encyclopedia
The level starts with a roller coaster platform, and a few Roto-discs and Podoboos. In the beginning, there is a Super Leaf, which the player needs to collect fast or they lose the roller coaster. Next, there is a door which leads to a room with another Super Leaf, a Starman, and more Roto-discs. As Raccoon Mario, the player can fly up to the ceiling to find a Brick Block containing a 1-Up Mushroom. Next, there is another door which leads the player to the boss, which is Boom Boom.