Why go
This context gives the palace’s family history a constitutional dimension. The ruling line matters to who becomes prince, but Monaco’s sovereignty is not treated as a temporary grant that disappears if that line ends. It separates the future of the dynasty from the future of the country.
The full story
The House of Grimaldi has been associated with rule from the Rock since the late thirteenth century, although control was interrupted at several points. Succession now follows constitutional rules rather than simply the fortunes of a medieval fortress. Article 10 of the constitution sets out the eligible family line and the order in which descendants may inherit. The relationship between dynasty and state changed in an important way in 2002. A new treaty between Monaco and France made clear that the principality would remain independent if the Grimaldi line had no successor. France’s wider defence responsibility remained a separate matter. This is a useful distinction at the Prince’s Palace: the building embodies a family history, but the modern principality is a sovereign state whose existence does not depend on an unbroken line of heirs. Current individual places in the succession order may change; the constitutional principle is the lasting point.