There's a lake that freezes from the top down. - Apparently.
Lake Constance, located on the border of Germany, Switzerland, and Austria, has a unique phenomenon where it freezes from the top down due to its unique shape and thermal currents. In the winter of 1963, the lake's surface temperature was a chilly 2°C (36°F), while the bottom was still a balmy 10°C (50°F). This unusual behavior is due to the lake's depth and the way it receives sunlight, making it a fascinating anomaly in the world of meteorology.