Summer Olympic Games Australia (1956, 2000) and Brazil (2016). Africa has yet to host a Summer Olympics. Stockholm, Sweden, has hosted events at two Summer Olympic Games, having been sole host of the 1912 Games, and hosting the equestrian events at the 1956 Summer Olympics (which they are credited as jointly hosting with Melbourne, Australia). Amsterdam, Netherlands, has also hosted events at two Summer Olympic Games, having been sole host of the 1928 Games and previously hosting two of the sailing races at the 1920 Summer Olympics. At the 2008 Summer Olympics, Hong Kong provided the venues for the equestrian events, which took
Youth Olympic Games than their senior equivalents. The most recent Summer YOG was the 2018 Summer Youth Olympic Games of Buenos Aires. The next Winter YOG to take place will be the 2020 Winter Youth Olympic Games of Lausanne while the 2022 Summer Youth Olympics will take place in Dakar. The concept of the Youth Olympic Games came from Austrian industrial manager Johann Rosenzopf in 1998. This was in response to growing global concerns about childhood obesity and the dropping participation of youth in sport activities, especially amongst youth in developed nations. It was further recognized that a youth version of the Olympic