By Debbie Emery - Breaking Celebrity News Reporter

The torch is lit, the stadium is built and more than 10,000 athletes from around the world are getting dressed in their official uniforms for Friday's opening ceremony.

This year's games will make London the first city to ever host the modern Olympic Games three times  - in 1908, 1948 and 2012 – and in celebration of the 30th games, Breaking Celebrity News has compiled a list of seven thing you didn't know about the Summer Olympics.

7. The Ancient Olympic games originated in the various city-states of Ancient Greece in honor of the God Zeus around 776 BC in the Greek city of Olympia. The traditional competition began as an annual foot race of young women in competition for the position of the priestess for the goddess, Hera. Then the games expanded to running events, a pentathlon (consisting of a jumping event, discus and javelin throws, a foot race and wrestling), boxing, pankration (a martial art that blends boxing and wrestling), and horse-riding events.

History books are unclear as to when the Ancient games officially ended but it is most commonly cited as 393 AD when emperor Theodosius I decreed that all pagan cults and practices be eliminated.

6. Clothing optional! Unfortunately the Greek tradition of athletic nudity isn't acceptable in the modern world, but it was in 720 BC when introduced by either the Spartans or the Megarian Orsippus and adopted as part of the Ancient Olympics.

5. Interest in reviving the Olympics grew out of the Greek War of Independence from the Ottoman Empire in 1821, and games were sponsored by wealthy Greek-Romanian philanthropist Evangelis Zappas and held in Athens City Square in 1859 but only featured athletes from Greece and the Ottoman Empire. The first modern summer Olympics were later