Castelsarrasin is an overlooked town in the Tarn-et-Garonne department of southwestern France. It is located on the banks of the River Tarn, and is a convenient base for exploring the surrounding area. The town has a well-preserved medieval center, with a castle, ramparts, and a Gothic church. There are also several interesting museums, including a museum of local traditional crafts. The town is surrounded by beautiful countryside, with hills, forests, and vineyards. There are several small villages in the area, as well as the city of Montauban, which is worth a visit. Castelsarrasin is also a convenient base for exploring the Pyrenees Mountains.