The home of Monaco’s royal family, the Palais du Prince dominates the Principality from the Rock. A tour of the Grands Appartements—with audio tour recorded by none other than Prince Albert himself—allows visitors to glimpse the Throne Room and artworks by Bruegel and Holbein. The palace was built in the 13th century, and some of it dates from the Renaissance. The ideal time to arrive is 11:55am, so you can watch the 10-min. Relève de la Garde (Changing of the Guard). Summer concerts by the Monte-Carlo Philharmonic Orchestra are held outside in the courtyard. Fancy a Facebook post? Forget it—taking photos inside the Prince’s palace is strictly prohibited.