Super Mario 3D Land: 4-2

We land in a tower-like level where an Underground remix plays. There's an Ink Piranha in the right corner. We climb the steps and find the first Star Coin above the Ink Piranha on that level. We hit the red ! Block for blocks to form a stairway up. They don't last long, but we can hit the block as many times as we need. We hit another set on the next level, to the right. After we ascend, we duck into the crevice on the left to drop to the second Star Coin. We spring back up. The third Star Coin is just above the last ! Block. We get it by using the block to make three blocks, then wall jumping between them and the right wall. We use four springs to reach the green pipe to the flagpole.