Hameln (Hamelin in English) is a German town on the river Weser, famous for the folk tale of the Rat-Catcher of Hamelin. The tale has its origins in the Middle Ages when a ‘piper’ was leading the children away from the town, never to return. Since the 16th century the piper is a rat-catcher hired by the town to lure rats away with his magic pipe.
In the 15th and 16th centuries Hamelin was a member of the Hanseatic League.
The stamp on the right depicts the House of Blackheads in Riga, Latvia. Another of the Hanseatic League members.