Schwaltenweiher is a reservoir located in the Ostallgäu region of Bavaria, Germany. It's a popular spot for swimming and fishing, and it's surrounded by the beautiful Alps. The lake has a rich history, with Emperor Maximilian I designating it for fishing and hunting waterfowl way back in 1514. Over the years, it has changed hands multiple times and even hosted some notable guests like Theodor Heuss and Horst Köhler. So, if you're looking for a picturesque place to relax and enjoy nature, Schwaltenweiher is definitely worth a visit!