The skating ground has already opened. So we went to it to make our first rounds this year. Lot of childs were there and our eldest is just going to learn it.
Two years ago it was so cold in Dezember that the lake was frozen. There was 40 cm heavy ice on the lake. For a few weeks they made a big skating ground on the lake. It was very funny to skate there.
It is said that if there are minus 300 degree over a certain period that lake Zürich gets frozen. There must be for example 20 days with minus 15 or 30 days with minus 10 degree. This only happens 2 times in hundred years. But two years ago it nearly happend.