Nothing's better than chilling out by the water while you're on vacation. Bring a picnic to Westerwerker Lake and then stay for a lovely sunset.
This body of water is on the to-do lists of many travelers to Gluecksburg. But Westerwerker Lake isn't the area's only drawcard. Flensburg Harbor, Gluecksburg Castle, and Solitude Beach are some other worthwhile sights close by.