From medieval castles on the top of a mountain in Lisbon to Prussian palaces in Berlin and the epic castle that inspired Walt Disney’s Disneyland, much of Europe’s best castles are hidden gems.

This aerial photograph taken on March 27, 2024 shows the Chateau de Montsegur, a 13th century mountain-top castle in the Ariege department of southwestern France. (Photo by Ed JONES / AFP ...