The castle was constructed in the 11th century to keep the inhabitants safe from pillagers , and later fortified during centuries of war ; only the original stone keep remains . It is free to visit , and the main tourist office of the region , the Maison du Parc , can be found inside the castle grounds .
It ’ s a steep drive , cycle or climb to the top , up the sharp Chemin Jean Racine , named for the 16th century poet who lived in one of the castle ’ s towers for a while , but there ’ s a pleasantly shady footpath for your walk back down to the town . After visiting the small centre ville , call in to The Alchemist , a former herbalist shop and now acclaimed sirop ( syrup ) bar and boutique where they create the most sublime concoctions .
Sit outside on the terrace , with a view to the Château de la Madeleine above and sip a revitalising mix of Verveine Gingembre or a sweet and refreshing Fraise à la menthe .
Don ’ t leave without popping inside to choose from the gorgeous selection of artisanal syrups to take with you .
Through the village of Chevreuse runs a tiny offshoot of the Yvette river , gently traversing timeworn cottages , ancient wash-houses , and a medieval tannery . There are 22 petits ponts , or little bridges , that span the river , crossing various pathways .
A popular walk for locals and visitors , this promenade is hidden behind high fences sandwiched between the backs ( or