The canal around Groenlo has an illustrious history and is therefore partly a national monument. Dug out by hand around the 13th century, the defences became world-famous in the centuries that followed. Grol, as Groenlo was called at the time, is also an important fortified town during the 80-year war. Back and forth, the town was in the hands of the Spanish and the Dutch. From all over Europe, mercenaries came to Groenlo in the 16th and 17th centuries to conquer the city, the most famous feat being the famous 'Siege of Groenlo'. At that time, the canal played an important role in repelling attacks. To this it also owes its star-shaped character. While canoeing, you get a unique view of the canal and the fortifications. You literally step into history!