Before designing Parc Monceau in the 8th arrondissement, Louis Carrogis Carmontelle laid out one of France’s earliest romantic parks at this 18th-century château less than an hour from Paris.

Hidden within the medieval village of Roquebrune-Cap-Martin, between Monaco and Italy, the residence was assembled from several historic village properties, with terraced gardens overlooking the Mediterranean that Grace Kelly later described as “small but precious.”