This is not a joke. This is a real principality with its own king, currency, passports and stamps:
Sealand was founded as a sovereign Principality in 1967 in international waters, six miles off the eastern shores of Britain. In late June of 2006, the island suffered a devastating fire which destroyed much of the country’s administrative centre and the main power generation facility which serves its population and industries. Fortunately, back-up systems exist which permit its activities to continue but the disaster has compromised significantly the quality of life of its inhabitants and the continued development of the island’s economic and social growth.
It’s amazing. Sometimes even unrealizable dreams come true 🙂