Emmanuel Philibert, Prince of Carignano, Tommaso's son, in the late 17th century, commissioned Guarino Guarini to transform the fortress into a pleasure residence.

In the late 18th century, Louis Victor, Prince of Carignano ordered a renovation of the interiors, enlarging the two southern towers, adding stucco and other neoclassical decoration; he also commissioned a new entrance, with 4 Corinthian columns and a triangular fronton, and the great staircase.

Emmanuel Philibert created a wide park in the jardin à la française style that opens for the castle's northwards view.

A Russian dacha, built to honour Tsar Nicholas II of Russia's visit to Piedmont to sign the Racconigi Bargain, was also created in the landscape park.

The one hundred and seventy hectares of parkland were given its current design by the German Xavier Kurten, who gave the setting a romantic touch: lakes, canals, bridges, caves, picturesque buildings and old trees populated by several species of birds, including a large colony of storks.