But in Monaco, a tiny microstate on the French Riviera known for its Grand Prix and huge wealth, lives a less renowned but equally interesting royal family.
Currently headed by Prince Albert II, the son of Prince Rainier III and Princess Grace Kelly, the Monaco royal family is one of the richest in the world. Albert alone has a net worth estimated at over $1billion.
He is married to Princess Charlene of Monaco in what long looked like a picture-perfect marriage. Together, they share two children.
But there's more behind this story, including the time Princess Charlene disappeared from royal life for a year, a rumoured contract and sordid secrets.
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Princess Charlene: the almost runaway bride.
Princess Charlene was born in Rhodesia (modern-day Zimbabwe), before moving to South Africa at 11 years old.
With a former competitive diver and swimming coach as her mother, Charlene soon also excelled in the pool. She represented South Africa at the 1998 and 2002 Commonwealth Games, winning a silver medal in the 4x100 metre medley relay.