Following the success of the 1896 Games, the Olympics entered a period of stagnation that threatened their survival. The Olympic Games held at the Paris Exposition in 1900 and the World's Fair at St. Louis in 1904 were side-shows. The Games at Paris did not have a stadium, however this was the first time women took part in the games. The St. Louis Games hosted 650 athletes, but 580 were from the United States. The homogeneous nature of these celebrations was a low point for the Olympic Movement. The Games rebounded when the Intercalated Games (so-called because they were the second Games held within an Olympiad, a period of time lasting four years) were held in Athens. These Games are not officially recognized by the IOC and no Intercalated Games have been held since. These Games were hosted at the Panathenaic stadium in Athens. The games attracted an international field of participants and generated great public interest.