World 7: Mid Castle

Coin 1 (before checkpoint)

Look for the first coin at the very top of the first elevator section, just below the pipe--tilt the platform right as you approach the top to reach it.

Coin 2 (before checkpoint)

If you can see the second Star Coin, but can't figure out how to reach it, then it's already too late. You can only access is via the first room--ride the elevator to the very top. Once there, tilt it as far left as you can then look for a hidden block. Jump on top of it, then to the ceiling and head right to find a hidden warp pipe which takes you to the second Star Coin, in the next room.

Coin 3 (after checkpoint)

This final coin is also the biggest pain to get. It's located on the far left, just before the boss's door. However, it's blocked by some bricks that can only be destroyed with a bob-omb. The easiest way to deal with it is to simply grab a bomb (after jumping on it to light the fuse) and carrying it to the wall and simply hold onto it while it detonates. Sure, it'll cost you a hit, but it guarantees you'll destroy the wall, instead of trying to kick a bomb into it, which is simply an exercise in frustration (take it from us!).

Alternate Route (after checkpoint) This level contains a secret route that will enable you to not only bypass the castle's boss, but grants access to a special path on the world map leading to World 7-6, then into the world's final castle (taking you right to its boss, skipping most of the level!). You'll find the entrance in the second room, where the checkpoint's located. Ride the elevator there up past the first item box, then start looking for a hidden alcove in the right wall, between one of the extending platforms and below a pair of cannons. It will warp you to an area containing a secret flag pole.