2004 Summer Olympics return of the games to the city where they began. Having previously hosted the Summer Olympic Games in 1896, Athens became one of only four cities to have hosted the Summer Games on two separate occasions (together with Paris, London and Los Angeles). A new medal obverse was introduced at these Games, replacing the design by Giuseppe Cassioli that had been used since the 1928 Games. This rectified the long lasting mistake of using a depiction of the Roman Colosseum rather than a Greek venue. The new design features the Panathenaic Stadium. The 2004 Summer Games were hailed as "unforgettable,
Summer Olympic Games when Tokyo again becomes host city. Historically, the Summer Olympics has been held predominantly in English-speaking countries and European nations. Tokyo will be the first city outside these regions to have hosted the Summer Olympics twice; it will also be the largest city ever to have hosted the Games, having grown considerably since 1964. The 2016 Games in Rio de Janeiro, Brazil, were the first Summer Olympics to be held in South America and the first that were held during the local winter season. The only two countries in the Southern Hemisphere to have hosted the Summer Olympics have been