World 5-Castle (New Super Mario Bros. 2)

 is the castle of World 5 in New Super Mario Bros. 2. This level is a lava level, and it centers around Fences, including a unique type of Fence that can be changed to move up or down the Wire using or.

Boss Battle
The boss of this Castle is Ludwig von Koopa. To hit him, use the Cannon Pipes to shoot Mario to Ludwig. After one hit, he upgrades his blasts to four from three. Another hit, he swings on the chain, making attacks more difficult. After Mario and Luigi defeat Ludwig, they see Princess Peach in a caged Koopa Clown Car. Before the Bros. can free Peach, the Clown Car takes Peach away to Bowser's Castle.

Star Coins

 * Star Coin 1: Not too far before the checkpoint, there is a hidden red pipe that can be reached with hidden blocks. The red pipe takes Mario directly to the star coin.
 * Star Coin 2: Immediately after the checkpoint, The star coin is floating over the lava. Mario must wait for the grating to rise from the lava to get it.
 * Star Coin 3: Once the vertical rectangular grating sinks into the lava, Mario should wait until he is able to grab the third star coin.

Enemies

 * Climbing Koopas
 * Podoboos
 * Dry Bones
 * Bone Piranha Plants
 * Big Bone Piranha Plants
 * Boss: Ludwig von Koopa