1.
palace, royal palace
A grand building serving as the official residence of a monarch, emperor, or other sovereign. Used for both Japanese imperial palaces and foreign royal palaces.
The Palace of Versailles is one of the most famous tourist destinations in France.
Usage
Used for grand royal or imperial residences worldwide. In Japanese contexts, the imperial residence in Tokyo is usually called 皇居 (Imperial Palace) rather than 宮殿. 宮殿 is more often used for foreign palaces or in historical and literary contexts.