Milky Road

Milky Roads (雲の川（ミルキー･ロード）) are artificial routes in Skypiea, manufactured from clouds. One leads from the Heaven's Gate up to the White-White Sea.

Another connects Angel Island to the Upper Yard and then flows along the whole Upper Yard. People travel through the Milky Roads like through a river, usually using Dial-powered vessels.

After the time-skip, Nami is able to create these using her Sorcery Clima-Tact.