Complex sentence: Once a small château between the royal residences of Vincennes and Fontainebleau, the estate of Vaux-le-Vicomte was purchased by Nicolas Fouquet in 1641, an ambitious 26-year-old member of the "Parlement of Paris".
Split into simpler sentences: Once a small Château located between the royal residences of Vincennes and Fontainebleau, the estate of Vaux-le-Vicomte was purchased by Nicolas Fouquet in 1641. At that time he was an ambitious 26-year-old member of the "Parlement of Paris".