Grand Marais, Minnesota is the beneficiary of an unusual geological phenomenon.

Two kinds of volcanic rock flowed out from the earth: a hard, relatively impervious variety surrounding a softer and more easily eroded variety. The result is like a huge bowl forming a natural harbor.

Along with a catch of fresh fish, boats from Grand Marais harbor bring in a huge haul of Lake Superior caviar. Tons of it are sold yearly in Scandinavia, making Grand Marais the “Fresh-Water Caviar Capital of Minnesota.” Go ahead and laugh. In dollar terms, the fact is far from trivial. The fishermen laugh, as they say, all the way to the bank.

One of the things a traveler can do from this harbor is sail aboard the tall ship, Hjørdis. Ever wish to go swashbuckling? Now’s your chance.