Also known as: メタルハーバー, Metaru, l_Hābā
Metal Harbor is the fourth stage of the Hero story in Sonic Adventure 2 and Sonic Adventure 2: Battle and is playable as Sonic the Hedgehog. As the name suggests, it is a large military harbor belonging to G.U.N, and consists of many shipping yards and aircraft carriers scattered around the area.
Unsurprisingly, the construction of the harbor leads to an abundance of Rails, all of which can be grinded upon. As Sonic races through this level, he encounters many G.U.N. robots trying to stop him from escaping, as well as fighter jets. The harbor also contains several missile launching platforms and aircraft carriers.