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.
Monaco
Monaco is so old that it has outlived many of the nations and institutions that it has had relations with. The Crown of Aragon and Republic of Genoa became a part of other countries, as did the Kingdom of Sardinia. Honoré II, Prince of Monaco secured recognition of his independent sovereignty from Spain in 1633, and then from Louis XIII of France by the Treaty of Péronne (1641).