From reusable deposit cups and plastic-free patios, to the world-famous glove fish and weekly market trash. For five years, De Grachtwacht has been committed to clean the canals of Leiden, and the volunteers continue to collect, research and persevere. Check out some of the biggest successes and challenges for De Grachtwacht 24/7 in the windows of the bridge house at the Marebrug.
Take a look through the windows of our bridge operator's house and learn all about the plastic in the canals and our special urban nature. From stuffed animals and canal beasts on ethanol; but also our best treasures and weirdest finds of plastic pollution encountered during our clean-ups. Throughout the year, collection pieces are exhibited in various 'window exhibitions'. You can visit them for free, from outside, 24 hours a day, 7 days a week.