Plan to spend around 1.5 to 2 hours at Château de Blois for a well-paced visit. This gives you enough time to explore the royal apartments, admire the Francis I staircase, visit the Salle des États Généraux, walk through the Fine Arts Museum, and spend time in the courtyard comparing the château’s Gothic, Renaissance, and classical façades. If you enjoy reading room displays, taking photos, or exploring the museum collection in more detail, keep closer to 2.5 hours so the visit doesn’t feel rushed.