Four dozen swimmers jump into the cold Vltava river in Prague's historic centre for a traditional swim. The event marks Epiphany, a Christian feast holiday commemorating the revelation of Christ to the Three Kings, or Three Wise Men, on January 6. Near Prague's historic Charles Bridge, the swimmers, led by a trio of wise men wearing crowns, bemoaned the warm weather which sent water temperature up over six degrees Celsius. "I heard about the benefits of icy water" says Lenka Urbankova, one of those taking the plunge, "it's best when it's below four celsius." IMAGES AND SOUNDBITES