Complexe Touristique de La Justale

For a relaxed nature walk with views of the Pyrenees, head to Lac de Touille (five minutes’ drive), just across the river Salat. A redeveloped gravel pit, the reservoir is now a popular spot for wildlife spotting, picnicking and fishing (for which you’ll need a permit). Your first glimpse of Château de Mauvezin (45 minutes) will come as you drive along the D938 en route to this 12th-century fortress on a rocky outcrop. While you take in splendid mountain views, the kids might prefer to explore the castle courtyard, with displays of catapults and hanging prisoner cages, or head inside to check out the collection of medieval weapons. Toulouse (one hour and five minutes) is known for the Romanesque Basilique Saint-Sernin, with an imposing stone interior and an elegant bell tower. Museums cover a range of subjects, from fine arts (Musée Paul-Dupuy) to modern history (Musée départemental de la Résistance et de la Déportation). At sunset, sit on the steps on Place Saint-Pierre for views of the river Garonne.