This week on 60 Minutes, correspondent Jon Wertheim visited Sealand, the smallest area in the world to claim itself as a sovereign nation. Getting there—and staying overnight — was its own adventure.

LONDON (Reuters) - For sale: the world's smallest country with its own flag, stamps, currency and passports. Sign up here. Apply to Prince Michael of Sealand if you want to run your own storm-tossed ...