If the skies are turning a dark shade of gray, why not spend some time at Werder Windmill? You'll be fascinated by just how much you can learn about the past here.
You're spoiled for sightseeing choice when visiting Werder. Werder Windmill is a great place to start here, but there are many other fine sights to consider. Sanssouci Palace, Potsdams Brandenburg Gate and New Palace are not far from the collection of historical artifacts and and will cap off your day nicely.