World 7-A (New Super Mario Bros.)

World 7-A is a level found in New Super Mario Bros.

Overview
In this level, you're in a massive building filled with pipes.

Enemies

 * Squigglers
 * Piranha Plants
 * Koopa Troopa (red)

Star Coins

 * Star Coin 1:
 * Star Coin 2:
 * Star Coin 3: