The Guimarães UNESCO World Heritage Site is located in the northern region of Portugal and is recognized for its historical significance and well-preserved architecture. It includes the medieval Guimarães Castle, which dates back to the 10th century, and the Palace of the Dukes of Braganza, showcasing the city's role in the formation of the Portuguese nation. Designated as a UNESCO World Heritage Site in 2001, Guimarães features a charming old town with narrow streets, squares, and buildings that reflect various architectural styles. The site is often referred to as the "birthplace of Portugal," highlighting its importance in the country's history and culture.