Mont-Louis is a fortified town located in the Pyrénées-Orientales department of southern France. It was built in the 17th century by the architect Vauban as part of a series of fortifications to protect the French border. The town is known for its well-preserved ramparts and unique star-shaped layout. The town is situated at an altitude of 1,200 meters, offering stunning views of the surrounding mountains. Mont-Louis is also recognized as a UNESCO World Heritage site due to its historical significance and architectural value. Visitors can explore its narrow streets, historic buildings, and the nearby Cerdagne region.