Sailing at the 2004 Summer Olympics the racing was organized at the Agios Kosmos Marina at the coastal area of Southern Attica some 14 km south of Athens city centre and close to the old airport. This harbor was built in the 1960s but for the 2004 Summer Games it was completely reconstructed to form the Agios Kosmas Olympic Sailing Centre. The Agios Kosmas Olympic Sailing Centre was completed on 31 January 2004. On clear day the Acropolis could be seen from the course areas. During the 2004 Summer Olympics sixty one countries competed in the Olympic sailing regattas. Australia, France, Italy, Great Britain, Greece, Spain
Summer Olympic Games from a 42-event competition with fewer than 250 male competitors from 14 nations in 1896, to 306 events with 11,238 competitors (6,179 men, 5,059 women) from 206 nations in 2016. The Summer Olympics has been hosted on five continents by a total of nineteen countries. The United States has hosted the Games four times (in 1904, 1932, 1984 and 1996); this is more times than any other nation. The Games have been held three times in the United Kingdom (in 1908, 1948 and 2012); twice each in Greece (1896, 2004), France (1900, 1924), Germany (1936, 1972) and Australia (1956, 2000);