The "Route of the Castles" is a scenic trail in Portugal that connects a series of historic castles and fortresses. This route showcases the rich medieval heritage of the region, allowing visitors to explore well-preserved structures that date back to the Middle Ages. Travelers can enjoy breathtaking landscapes while learning about the history and architecture of each castle. The route typically includes notable sites such as Castle of Óbidos and Castle of Almourol, making it a popular destination for history enthusiasts and nature lovers alike.