Thriller Bark is a giant ship currently located in the Florian Triangle. As revealed by Brook, it used to be located in the West Blue. It was converted into a pirate ship, the world's largest, and is owned by the former Shichibukai, Gekko Moriah. It was heavily damaged by Moriah's and Kuma's attacks during the battle against the Straw Hat Pirates, and after Moriah's defeat, the ship was abandoned.

This island is surrounded by a huge outer wall that goes around the island, the gate is a giant mouth that opens and closes. There are four separate chains that connect from the wall to the sky above the mansion. This island has an old broken inner stone wall encircling it with towers and a moat. There is a mansion at the middle of the island surrounded by a semi-dead forest. The entire ship somewhat resembles the stereotypical scenery in vampire or horror movies, such as Dracula or Frankenstein.