Karakuri Island

Karakuri 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 Viz Manga and 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.

History
When Vegapunk lived on the island in his youth, he created a laboratory that housed many experiments, most that were never finished. His lab and everything inside is considered a treasure of mankind and is more valuable than money, guarded by the Marines. Vegapunk modified the local animals into cyborgs, such as beetles, lions, gorillas and snakes to use a labor force to build a in-ground heating system for the island for the people. He was never able to finish due to lack of skills and funding to make it a reality. It is visible from the island as two giant bolts lodged through the mountain. Because of this, the people found his kindness all the warmth they need.

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.

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 of 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), a creation of Doctor Vegapunk, but failed to work.
 * 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.