 The pleasure grounds were enclosed in woodland; since their innovative example was followed and extended at Vaux-le-Vicomte and in the gardens of Versailles, and since André Le Nôtre's father was employed at Richelieu in 1629, it is not improbable that the young boy was employed as well.Construction took place between 1631 and 1642 – the year of the Cardinal's death – and employed around 2,000 workers.At the Château de Richelieu, the Cardinal maintained one of the largest art collections in Europe and the largest collection of ancient Roman sculpture in France.