Antarctica.
Antarctica is the only large land mass that is not part of a sovereign state. It is governed by the Antarctic Treaty System, which establishes it as a scientific preserve and prohibits military activity.
The biggest island state in the south is Tasmania, which is part of Australia.
Miami
All the continents used to be a part of one land mass and separated. This supercontinent was Pangea.
Europe and Asia are visibly on the same land mass. Africa is too a part of this land mass. The three continents form the supercontinent of Afro-Eurasia.
Gulf
Part of the Scandinavian Peninsula.
North America and South America are connected by a strip of land known as the Isthmus of Panama. This land bridge joins the two continents, effectively making them part of the same land mass.
Manila is the second biggest city in Philippines
Asia and Europe are part of one huge land mass separated by the Ural Mountains.
Well, no land area -- Hawaii is totally surrounded by the Pacific Ocean. On the other hand, Midway Island is the first land mass west of the State, is another island totally surrounded by the Pacific Ocean, is part of the US, but is not a State.