Karakuri Island

Karakuri Island (からくり島 Karakuri-jima, Mechanical Island) is an island somewhere on the Grand Line which resides the Future Country Barujimoa (未来国バルジモアMirai-koku Barujimoa, Future Land Baldimore in the FUNimation subs). The kingdom specializes in advanced technology, such as cyborgs and mechanical structures. As such, it is hailed as the "Future Kingdom" and the birthplace of the genius, Vegapunk.

Franky was sent here by Bartholomew Kuma during the incident in the Sabaody Archipelago. While exploring the island, he reached Vegapunk's old home.

The only residents known by their names as of now are Kitton and Taroimo. The island is also populated by other cyborg animals, such as a beetle, a lion, a gorilla and a snake. In the anime, it is stated that it was Vegapunk who turned all the animals into cyborgs.

When Franky broke into the lab, he found the lab's self-destruct button and mistook it for a pirate symbol and pushed it. The lab and unfinished heating system promptly exploded in a giant mushroom cloud as a result. This incident would later be referred to by the rest of the world as "The Nightmare in Barujimoa."

Trivia

 * To fit the Cyborg theme, the highest mountain in the island has 2 giant bolts (Much like Dr. Frankenstein's creature on its neck).
 * The name of the island the kingdom is on refers to Karakuri, a traditional Japanese mechanized craft wherein furniture and dolls come to life as if by magic.