2000 Summer Olympics torch relay in 1936. The Flame is initiated by using a parabolic mirror that concentrates the sun's rays. However, due to some cloud cover on the day of the ceremony, there was insufficient sunlight to create the required level of heat. A backup, lit on the previous day during rehearsals, was used instead. The remainder of the ceremony could then take place. The relay always begins in Greece and travels from Olympia to Athens and the Panathenaic Stadium. The Hellenic Olympic Committee arranged for the torch to be taken to several Greek islands, a first in the history of Olympic relays. The
2010 Summer Youth Olympics torch relay Kuan Yew lit the cauldron at Marina Bay. However, the Youth Olympic flame was to last till the closing ceremony of the games. Although the IOC had scrapped any further international legs of the Olympic torch relay due to problems encountered during the 2008 Summer Olympics torch relay, the Executive Board approved an exception for Singapore. The plan however was different from the traditional Olympics; the flame was to visit one city from each continent, where community celebrations would take place. The five cities, dubbed the "celebration cities", selected for the torch relay were Berlin, Germany; Dakar, Senegal; Mexico City,