Sealand

The Principality of Sealand is a micronation that claim its territory as the artificial island of Roughs Tower, a former Maunsell Sea Fort located in the North Sea 10 km (six miles) off the coast of Suffolk, England, as well as territorial waters in a twelve-nautical-mile radius. Sealand is occupied by family members and associates of Paddy Roy Bates, who styled himself as H.R.H. Prince Roy of Sealand. The population of the facility rarely exceeds five, and its inhabitable area is 550m².

Although Sealand's claims to sovereignty and legitimacy are not recognised by any country, it is probably the world's best-known micronation, and is sometimes cited in debates as an interesting case study of how various principles of international law can be applied to a territorial dispute. Sealand claims to have de facto recognition from Germany and the United Kingdom.

Sealand is a member of the N.F Board, a football association for unrecognised states and autonomous territories. Sealand has played both the Aland Islands and the Chagos Islands.