The first World Robot Olympiad was hosted by Singapore in 2004. Since then WRO has been hosted by Thailand, China, Taipei/Taiwan, Japan, Korea, Philippines and - for the first time in the Middle East - Abu Dhabi in 2011.
Over the years the tendency has been that the WRO final gets bigger both in terms of numbers of teams participating and media coverage.
Below is the list of previous competitions - and as some of the associated websites are kept live you can visit them and see how the competition has been organized in the past.
2004 - Singapore
2005 - Thailand
2006 - Nanning, China