2000 Summer Olympics
The 2000 Summer Olympic Games, officially known as the Games of the XXVII Olympiad and commonly known as Sydney 2000 or the Millennium Olympic Games/Games of the New Millennium, were an international multi-sport event which was held between 15 September and 1 October 2000 in Sydney, New South Wales, Australia. It was the second time that the Summer Olympics were held in Australia, and also the Southern Hemisphere, the first being in Melbourne, Victoria, in 1956.
2000s in sports
2000 XXVII Summer Olympics - Sydney, Australia (most gold medal wins USA) 
2002 XIX Winter Olympics - Salt Lake City, USA (most gold medal wins Norway) 
2004 XXVIII Summer Olympics - Athens, Greece (most gold medal wins USA) 
2006 XX Winter Olympics - Turin, Italy (most gold medal wins Germany) 
2008 XXIX Summer Olympics - Beijing, China (most gold medal wins China)