Nothing's better than spending time by the water while you're on vacation. Take a picnic to Weißensee and then stay for a pretty sunset.
If you've got time to stop for a while in Fuessen, Weißensee is an interesting place to start your exploring. This body of water is one of numerous attractions that'll keep you on the hop here. Neuschwanstein Castle, Hohenschwangau Castle, and Forggensee are also waiting to be discovered nearby.