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.
Rainier III, Prince of Monaco
As Prince of Monaco, Rainier was also responsible for the principality's new constitution in 1962 which significantly reduced the power of the sovereign. (He suspended the previous constitution in 1959, saying that it "has hindered the administrative and political life of the country.") The changes ended autocratic rule, placing power with the prince and a National Council of eighteen elected members.