From 9 a.m. to 2 p.m. (closing time and last admission 1 p.m.), the Waldzoo will open its gates on December 24 for a winter stroll. All children up to and including the age of 16 have free admission to the zoo. In addition, the children's musician "Frank and his friends" will be there again this year. Christmas carols will be sung, laughed and danced to together at the zoo.<br