Sealand is a decommissioned anti-aircraft platform seven miles off the English coast. The occupants have declared it to be a sovereign nation, but it’s not recognized as such, and the UK government has just decided to ignore them. Back in the year 2000, a company named HavenCo installed computer servers in Sealand, making it the ultimate data haven, unfettered by governments, laws, or regulations. Unfortunately, it didn’t work out. The linked article has the full story.