The Château de Pau is a historic castle located in the city of {Pau}, in the southwestern region of {France}. Originally built in the 14th century, it served as a royal residence and has undergone several renovations over the years. The castle is known for its stunning architecture, featuring a mix of Gothic and Renaissance styles, and is surrounded by beautiful gardens. The château is also famous as the birthplace of {Henri IV}, the first king of the {Bourbon} dynasty in {France}. Today, it is a museum that showcases the history of the castle and the region, attracting many visitors who come to explore its rich heritage and impressive collections.