World 2-Castle (New Super Mario Bros. Wii)
World 2-castle is the first castle level and last level of World 2. The boss battle in this level is against Roy Koopa.
Star Coins
Star Coin #1 - If you have a Propeller Suit and are super quick you can grab this one right off the start by jumping up and left. Otherwise pick the middle path to get to the this coin. Then pick the top section to move on.
Star Coin #2 - You need to be big to bust out the bricks. Then wall jump to the Star Coin. If you miss it pick the top of middle section to loop back. Pick the bottom section when you are ready to move on.
Star Coin #3 - Hit the P-switch to activate the bricks so you can get the final Star Coin at the bottom of the map. The hurry to the right to go through the coins in the middle before they turn back into bricks.