Zanzibar is the island with a windmill where the characters get transported to the supposed future after the bomb in Church's robot body went off. Doc/O'Malley make this place thier evil lair, accompanied by the Red Zealot and Lopez, and is where he made his army of Lopez clones. It is where the Blues meet Crunchbite (who destoys the Lopez clones) and Andy, after they assault the island to attempt to capture O'Mally, which fails. Gary is installed here unti he is reunited with Wyoming. Tucker finds his sword underneath the windmill during the battle.
Later in Reconstruction, this is where the Meta went to recharge his armor and it's enhancements.