Fat Margaret

This guide to Fat Margaret in Tallinn opens with a puzzle you can see for yourself: the tower stands taller on one side than the other, sunk unevenly into marshy ground since it was raised between 1510 and 1531 to guard the harbor's Great Coastal Gate. You'll hear how her thick walls and dozens of cannon ports were built to make a visiting sea captain think twice, and how by the 1830s the guns were gone and the tower had become a prison instead. Look for the lean in her silhouette from the harbor side, where it shows most clearly.