Manufacture Zone

Introduction
Manufacture Zone is a large manmade factory island. Manufacture Zone is freefloating, making it hard to locate without the use of an Eternal Pose. The factory was abadoned around fifty years before the start of One Piece.

Geography
As Manufacture Zone is a manmade island, it contains no trees, nor grass or flowers. The island is completely made out of metal, allowing for electrical attacks to take full effect. The island also contains multiple mechanical devices including elevators and conveyor belts. The lower levels of the island have also been flooded with a pink liquid (it is assumed to be some sort of chemical or acid).

Architecture
Manufacture Zone was designed to be the most effective mass production factory. As such, the inside of the factory is rather crowded, except for a few choice areas. The machines inside are automated and only require power to work, mainly through the generator in the lower levels.

Citizens
As Manufacture Zone is completely automated, very little living things are required to be on the island. Before the factory was abadoned only three people had to stay on the island, a mechanic, a foreman and a supervisor. After the abadonment only one person has lived on the factory, ???.

Trivia

 * Manufacture Zone's name, among multiple other things, is based on the level Chemical Plant Zone from Sonic the Hedgehog 2.
 * The sole residents theme is the original Chemical Plant Zone theme from Sonic 2.