Albert II, Prince of Monaco
Prince Albert II is one of the wealthiest royals in the world, with assets valued at more than $1 billion, which include land in Monaco and France. Although Prince Albert does not own the Prince's Palace of Monaco, he does own shares in the "Société des bains de mer de Monaco", which operates Monaco's casino and other entertainment properties in the principality.
History of Monaco
In 2002, a new treaty between France and Monaco clarifies that if there are no heirs to carry on the dynasty, the Principality will remain an independent nation, rather than be annexed by France. Monaco's military defense, however, is still the responsibility of France.