Because they had discussed it beforehand, Leonard and others went directly to the palace of Monaco, or more accurately, the Monaco Grand Ducal Residence.
This building was originally built in 1191 as a fortress by the Genoese and has stood firm against countless foreign sieges and bombardments throughout its long history.
The palace is located in the Old Town of Monaco and, compared to the modernized Newtown District, the streets of Old Town are winding with stone steps, and houses with red roofs are neatly arranged on either side, forming a sharp contrast with the Newtown District's rich seaside atmosphere and modern vibe.
Soon, they arrived at the Palace Square in the Old Town District. Palace Square is situated at the mountain top; the Royal Palace is not very large, which is very much in line with the size of the country.
Of course, another reason is that the royal construction was based on a fortress, and for a fortress, a smaller size actually makes it easier to defend.