No trip to the Bavarian Forest would be complete without a visit to, and walk around, the Arbersee (the "groß" variety, not be confused with its little brother, as nice as the latter is). Set against a magnificent backdrop of towering cliffs belying their relatively low altitude (around 1000 metres), this gem of a lake feels like it should be high in the Alps. There is a well-marked perimeter trail with regular information boards pointing out the amazing natural features of the area. It's in German and Czech (the border is only a few miles away) but you'll get the gist of it. Even without your bi-lingual descriptions you should walk around the lake (45 minutes gentle stroll) and take in the scenery. They were having a heatwave during our visit with temperatures over 30 degrees C even at 1000m altitude so we really appreciated the shade afforded by the trees, and the cold beer at the huge pub-restaurant by the car park.