The Olympic Cauldron was emphasizing of Opening Ceremony for the 2012 Olympics in London. Designed by Thomas Heatherwick, the cauldron symbolize the best moment of the opening ceremony and continue the Olympics’ best-kept clandestine until unveiling. The cauldron featured 204 copper petals, every one representing one of the challenging nations. The petals were bringing to the stadium by every team as element of the athletes’ march. As each team completed their entrance, they attached a petal to a long pipe in a ring at the centre of the arena. The 204 petals then rose simultaneously, forming a giant Olympic torch for the entire world to witness. For full coverage of the opening and closing ceremonies for the 2012 Olympics in London, have a look is this gallery.