The morning before the closing ceremony of the 1964 Olympic Games in Tokyo, two young Bulgarian athletes waited nervously in the athletes village in Yoyogi Park.

Expecting only to compete for their country, they had suddenly found themselves about to get married in the world's first wedding to be held inside an athletes village.

"There have now been 17 marriages during the Olympics. All 16 others have ended in divorce," said Nikolai Prodanov, 78, bursting into laughter in his apartment in Sofia. "At least we haven't got divorced yet!"