The castle portion of this area is well-lit. It also includes many chains allowing you to ascend within the space. The ground floor of the castle has Spike pit. Common enemies of the castle are Bats and Vampires.
There are two Coffins along each side of the castle's walls (a grand total of four). Opening the fourth coffin for the first time will unlock the playable character Coco von Diamonds. In the middle portion of the castle, there are two switches that toggle the position of a corresponding pillar. These pillars will gain or block access to either side of the area- as well as a few Chests, Crates, or other treasures.
The bottom center of the castle will always contain several conveyor belts, and a spike pit.